MCX ELECTRONIC CONTROLLER

Transcription

1 WATER - AIR UNITS: CHILLERS y HEAT PUMPS User Manual

2 Thank you for trusting the Hitecsa Products. Our company has been offering the market an extended range of specialized units for air conditioning and cooling installations for over 35 years. Our approach is based on efficiency, adaptability, usability and practical solutions. This has been the hallmark of our product catalogue. The versatility of our factory allows us to contribute solutions, almost tailored to each project s specifications, in search of a solution to every problem that arises in design and implementation of air conditioning installations. From all of us at Hiplus Aire Acondicionado, once again, thank you very much.

3 MCX CONTROLLER for CHILLERS and WATER AIR HEAT PUMPS INDEX GENERAL FEATURES... 4 MCX INTERFACE DESCRIPTION... 5 START SCREEN... 5 LED Screen (MCX06C)... 5 LCD Screen (MCX08M, MCX15B, MMIGRS2)... 6 KEYBOARD... 7 MAIN MENU... 7 ACCESS LEVEL (LOG)... 8 UNIT START-UP... 8 CHANGE SETPOINT TEMPERATURE... 9 OPERATING MODE SELECTION... 9 TEMPERATURE REGULATION MODE CONFIGURATION... 9 INPUT AND OUTPUT VALUES LED Screen LCD Screen ALARMS, VISUALIZATION AND REARM Active alarms visualization Alarms Reset Alarm History TIME SCHEDULE RTC Set RTC (Real Time Clock) SCH Set Scheduler MCX MENU ELEMENTS MCX PARAMATERS LIST ALARMS GENERAL LIST

4 GENERAL FEATURES There are three basic shapes MCX06, MCX08 y MCX15, according to the number of inputs and outputs, and two screen types: LED and LCD. Optionally, we can connect a remote interface (MMIGRS2) with LCD screen in any MCX controller. MCX06C MCX08M MCX15B MMIGRS2 The general features of the controller in Chillers and Water Air Heat Pumps are: Regulation by temperature of the water inlet (or outlet). Proportional regulation, Proportional Integral or by dead band. Time schedule. Network connection (master-slave) Defrost control. Re-counting of operating hours for the maintenance of compressors and water pumps if the unit has this optional. Visualization of the return temperature and all inputs and outputs status. Compressors start up timing. Anti-freeze protection. Safety protection for High Pressure. Safety protection for Low Pressure. Protection of the compressors. Protection of the exterior fans. Protection by differential water pressure switch (Optional). Remote ON/OFF. Electronic expansion valve control (according to the models) Alarm management. MCX controllers have an integrated screen or optionally be blind with the remote user interface module (MMI). 4

5 MCX INTERFACE DESCRIPTION START SCREEN It is different as may be LED or LCD screen and it is configurable. It will show OFF if the machine is stopped, and it will show the temperature and the symbol of the elements that are functioning when the machine is running. The displays A and B are configurable, they show the temperature and the setpoint by default. LED Screen (MCX06C) LED screen with two digit groups and 18 icons. Digits color: Green. Alarm/Warning icons color: Red. Rest of the icons color: Amber. The measures displayed at A and B displays are selectable by dsa and dsb parameters. Selectable values are: OFF: No values. IdOF: Status of the ON/OFF digital input. SEt: Active setpoint (In display B by default) reg: Analog input used for temperature regulation (In display A by default) AI1: Analog input 1 AI8: Analog input 8 5

6 MCX INTERFACE DESCRIPTION START SCREEN LCD Screen (MCX08M, MCX15B, MMIGRS2) Main screen. Display resolution 128x64 pixel. Configuration of the measures displayed: dsa and dsb is the same as the explained in the LED screen. The LCD screen of the remote option has larger resolution and the advantage of being able to access to it outside the machine. 6

7 MCX INTERFACE DESCRIPTION START SCREEN KEYBOARD (UP) Inside the same level it allows you to move to a field of a top position. (DOWN) Inside the same level it allows you to move to a field of a lower position. (ESC) It places to a screen of a previous level for the current level. (ENTER) Access to the following screen or sublevel for the current level. (RIGHT) Access to the following screen or sublevel for the current level. Scroll to the right digit in password entry, etc. (LEFT) It places to a screen of a previous level for the current field. Scroll to the left digit in password entry, etc. MAIN MENU From the start screen, pressing the ENTER key you can go to the main menu. MCX06 Menu (LED Screen) MCX08/ MCX15 Menu (LCD Screen) Selected elements invert color in the LCD screen. The LED screen only has one line, display A indicates the current menu/submenu and display B shows the elements that are in that menu. Elements of the main menu: LED LCD Description MCX06 MCX08,15 UST - Unit Status Optional according to the machine unit current condition LOG - Login Entry of the password for the access level Str - Start Start up menu. PAR - Parameters Operating parameters configuration. I-O - Input/Output According to Optional, Input and Output configuration ALA - Alarms Alarms menu EEV - Config EEV Only with electronic expansion valves CLK - Clock Time schedule LNG - Language Language configuration SER - Service Service Menu HRS - Hour Counters Hour Counters 7

8 MCX INTERFACE DESCRIPTION ACCESS LEVEL (LOG) Menu: LOG Login To insert the 4 digit password defining the access level to menus and parameters. The current access level is then shown on the second raw of the main menu screen. There are 4 access levels to the different parameters or levels of configuration of the unit. L0 Level: Direct access for the user and without password. L1 Level: Access through password for the Installer or the maintainer of the unit. L2, L3 Level: Exclusive access for the Technical Service of HITECSA. Password for the access levels from 1 to 3 are defined with L01, L02 y L03 parameters, group1 "GEN - General", group2 "PAS - Password", only parameters of the active and lower level are visible. Without logging in, you get access level 0. You can t see parameters of menu entries belonging to a higher level than yours. UNIT START-UP It can be done as it follows: Pressing the UP key during 3 seconds it will alternate ON OFF Menu Navigation: Press ENTER to access to main menu. You enter the menu Str - Start where you find the following options. - ON Turned On. The unit stats operating in the previous selected mode. - OFF Turned Off. The unit stops according to stablished schedule. By parameter y01 (Menu parameters, group1 GEN General, group2 StU Setup ). (Check parameter list) By the remote Start/Stop digital entrance (check the electrical diagram of the unit) Example: This may be the following sequence in the LED screen (MCX06): START: Start ENTER DOWN ENTER UP ENTER STOP: ENTER DOWN ENTER UP ENTER 8

9 MCX INTERFACE DESCRIPTION CHANGE SETPOINT TEMPERATURE Default values can change depending on the unit. Select Parameters (Par) Regulation (reg) Setpoint (Set) in the main menu. MCX06 ENTER DOWN ENTER DOWN ENTER DOWN ENTER Enter to Setpoint menu SC1 Setpoint temperature in cooling mode The setpoint value is stablished in Celsius degrees for the functioning of the unit in cooling mode. Default is 12 C. It can vary from 8 C (SCL) to 22 C (SCH). SH1 Setpoint Temperature in heating mode The setpoint value is stablished in Celsius degrees for the functioning of the unit in heating mode. Default is 40 C. It can vary from 35 C (SHL) to 50 C (SHH). The values of the limits between which the setpoints can be adjusted are changed by entering level 1. OPERATING MODE SELECTION The current operating mode of the heat pumps is shown on the initial screen of the MCX controller. You have the following options to change it: Press DOWN key during 3s. This option can be enabled or disabled through the re2 parameter (Menu PAR Parameters, rev Reversing valve, CFR Configuration ). By the Start menu (Menu, Str Start, HC Heatt/Cool ) By the y03 parameter (Menu, PAR- Parameters, group1 GEN General, group2 StU Setup ). (See parameter list) By the digital entry of remote Heat/Cool (see electrical diagram of the unit). Example for MCX06C with LED screen: ENTER DOWN ENTER ENTER DOWN ENTER DOWN ENTER UP DOWN ENTER TEMPERATURE REGULATION MODE CONFIGURATION It can only be modified by entering access level 1. Main Menu - PARAMETERS (PAR) - REGULATION (reg) Configuration (CFr) reg Temperature regulation mode Default 0 (Tin regulation by Input Temperature), if you want to adjust the machine by output temperature, change the value to 1 (Tout MIx). It will regulate according to the output exchanger or mix of output temperatures if there are several exchangers. 9

10 MCX INTERFACE DESCRIPTION INPUT AND OUTPUT VALUES To enter in the main menu go to: Main Menu > Menu I-O > IOd I/O values. LED Screen Shows you in sequence (using the UP and DOWN keys) all the input and output values, showing the I/O code on display A ("AI" for analog input, "AO" for analog output, "di" for digital input and "do" for digital output) and its value on display B (analog input that are not present or in alarm are shown with "----"). LCD Screen You have access to three screens showing all the input and output values; each screen shows a group of 8 I / O. Use UP and DOWN keys to scroll them. The second and third screen are used with MCX15 and MCX20 only. Below example shows the first screen. 10

11 MCX INTERFACE DESCRIPTION ALARMS, VISUALIZATION AND REARM To enter to alarm menu go to: Main Menu: Main Menu: ALA Alarms Active alarms visualization Main menu > ALA Alarms > AAL - Active Alarms Shows you the active alarm screen. Each screen is dedicated to an alarm. You can scroll among them using the UP and DOWN keys. Each alarm is described through: - Alarm description (for LCD display only). - Alarm code. - Time since its activation in the format hours: minutes: seconds (seconds for LCD display only) NOTE: You can access to alarm visualization also by pressing the ESC key from the main screen. Alarms Reset Main Menu > ALA Alarms > ALR Alarms Reset Reset of active alarms (for manually resettable alarms only). Press ENTER to reset manually all the active alarms. NOTE: Alarms reset can be performed also pressing ESC for 3s within the alarm screens. Alarm History Main Menu > ALA Alarms > AHS Alarm History History of alarms The following information is displayed for each alarm (up to 10), in order from top to bottom: - Description of the alarm - Code of the alarm - Date and time of activation - Date and time of deactivation (if any) - Record number (in reverse): #1 is the last activated alarm. Use the UP and DOWN keys to scroll the list of alarms. 11

12 MCX INTERFACE DESCRIPTION TIME SCHEDULE To enter in the main menu go to: Main menu.> CLk Clock RTC Set RTC (Real Time Clock). Use the UP and DOWN keys to change the field to be edited (marked with a cursor). On the LCD display appear the fields: yy year, nn month, dd day, hh hour, ññ minutes y ss seconds. Use the ENTER key to enter into the edit mode. UP and DOWN again to change the value. ENTER to confirm and ESC to abandon. SCH Set Scheduler. The y08 parameter must be enabled if you want to configure the programmer. Up to 10 records are managed. When you are not into the edit mode (no field in reverse), use the UP and DOWN key to change the schedule record. Press the ENTER key to select, validate and change the field. The figure below is the screen for the first one Schedule #1 will start up the machine at 00:00 on Mondays Mo, Wednesdays We and Saturdays Sa. Time: time of the action start. Action: action type. Press UP: ON or DOWN: OFF to turn On or turn Off the unit. Week day: day of the week of the action (it is selected the field between Mo y We which belongs to Tuesday). Use the ENTER key to select a field (the colors are reversed). Use the UP and DOWN keys to change its value. ENTER confirms the change and selects the next field. ESC to abandon. In the LED display, the fields are shown in the following order: SCH programmation number, t time, Act Action, day mo Monday, day tu Tuesday, day WE Wednesday, day Th Thursday, day Fr Friday, day Sa Saturday, day Su Sunday, after each day of the week field there is a 1 (active) or a 0 (inactive), that can be modified by pressing UP and DOWN keys. 12

13 MCX MENU ELEMENTS LEVEL MEN U A MENU B MENU C Description L0 Main Menu L0 UST Unit Status L0 LOG Level Password L0 Str Start L0 ON Turn On L0 OFF Turn Off L0 Net Network L0 SON System ON L0 SOF System OFF L0 HC Heat/Cool L0 PAR Parameters L0 GEN General L0 dsp Display L0 PAS Password L0 StU Set up L0 reg Regulation L0 SEt Setpoint L0 I-O Input / Output L0 IOd Input and Output status L0 ALA Alarms L0 AAL Active Alarms L0 ALR Reset Alarms L0 AHS Alarm History. L0 CLK Clock L0 RTC Set Clock L0 SCH Schedule L0 LNG Language L0 IT Italian L0 EN English L0 DE German L0 FR French L0 SP Spanish L0 HE Hebrew L0 RO Romanian L0 RU Russian L0 PL Polish L0 CS Czech L0 HU Hungarian L0 PT Portuguese L0 SER Service Information L0 INF Info Software L0 DEV Info Unit L1 Sta Comp. status L0 Nrt Network reset L0 SVD Stepper valves info L0 HRS Hours Counter L0 COH Compressors L0 EPH Evap. pump 13

14 MCX PARAMATERS LIST MENU LEVEL PARAMETER VALUES DESCRIPTION MIN MAX Default* Unit UST LOG Str PAR I-O ALA CLK LNG ON OFF Net HC GEN reg IOd AAL ALR AHS RTC SCH IT EN DE FR SP HE RO SON SOF dsp PAS StU SEt Unit Status Login Start Turn On Turn Off Network System ON System OFF Heat / Cool Parametros General GENERAL > DISPLAY dsa Display A value = reg dsb Display B value = SEt GENERAL > PASSWORD GENERAL > SETUP y01 On/Off System 0:OFF 1:ON 0 = OFF y03 Heat / Cool System 0:COOL 1:HEAt 0 = COOL y08 Scheduler enable 0: NO 1: SI 1 = YES REGULATION > SETPOINT SC1 Setpoint temp in cooling SCL SCH 12 C SH1 Setpoint temp in heating SHL SHH 40 C Input/Output I/O Values Alarms Active Alarms Reset Alarms Alarm History Clock Set RTC Scheduler Language Italian English German French Spanish Hebrew Romanian SER HRS RU PL CS HU PT INF DEV Sta Nrt SVD COH EPH Russian Polish Czech Hungarian Portuguese Service Info Software Info Device Show rolling text Network reset Stepper valves info Hour Counter Compressors Evaporation Pump *Default values shown on the list are not always correct. These values will depend on the model of the chiller or the heat pump where the MCX controller is installed. 14

15 ALARMS GENERAL LIST The list of alarms will depend on the unit and the optional accessories that are mounted on it. See the Installation and Operation Manual of the unit where the control is mounted. Code Alarm Description Reset type Active with unit OFF Alarm relay Warning relay Circuit or System Compr. Pump Evap. Fan Cond. Heaters A01 General alarm Auto False True False SYSTEM OFF OFF OFF OFF A02 General overload alarm Auto False True False SYSTEM OFF OFF OFF OFF A03 Evaporator flow switch alarm Semi-Auto False True False SYSTEM OFF OFF OFF OFF A04 Condenser flow switch alarm Semi-Auto False True False SYSTEM OFF OFF OFF - AP0 General pumps alarm Manual False True False SYSTEM OFF OFF OFF OFF AP1 Thermic alarm evaporator pump Auto False True False SYSTEM OFF OFF OFF - AP2 Evaporator pump2 overload alarm Auto False True False NO - OFF - - AP3 Evap. fan 3 overload alarm Auto False True False NO - OFF - - AP4 Evap. fan 4 overload alarm Auto False True False NO - OFF - - AP5 Evap. fan 5 overload alarm Auto False True False NO - OFF - - AP6 Evap. fan 6 overload alarm Auto False True False NO - OFF - - AP7 Evap. fan 7 overload alarm Auto False True False NO - OFF - - AP8 Evap. fan 8 overload alarm Auto False True False NO - OFF - - AP9 Backup pump running Auto False False True NO A07 Low air temperature alarm Auto False False True NO A09 High temperature Auto False False True NO A10 Evap. Pump / run hours exceed Auto False False True NO A11 Evap. Pump 2 / run hours exceed Auto False False True NO A12 Cond. Fan / run hours exceed Auto False False True NO A13 Defrost max. time exceeded Auto False False True NO A14 High boiler temperature alarm Auto False True False NO AE1 Evaporator 1 ice alarm Semi-Auto True True False CIRCUIT 1 OFF AE2 Evaporator 2 ice alarm Semi-Auto True True False CIRCUIT 2 OFF AH0 General high pressure alarm Manual False True False SYSTEM OFF AH1 Circuit 1 high pressure alarm Manual False True False CIRCUIT 1 OFF AH2 Circuit 2 high pressure alarm Manual False True False CIRCUIT 2 OFF AL0 General low pressure alarm Semi-Auto False True False SYSTEM OFF AL1 Circuit 1 low pressure alarm Semi-Auto False True False CIRCUIT 1 OFF AL2 Circuit 2 low pressure alarm Semi-Auto False True False CIRCUIT 2 OFF AM0 General high suct press alarm Semi-Auto False True False NO AM1 Circuit1 high suct press alarm Semi-Auto False True False NO AM2 Circuit2 high suct press alarm Semi-Auto False True False NO AV0 General vacuum alarm Semi-Auto False True False SYSTEM OFF AV1 Circuit 1 vacuum alarm Semi-Auto False True False CIRCUIT 1 OFF AV2 Circuit 2 vacuum alarm Semi-Auto False True False CIRCUIT 2 OFF AC0 General compressors overload Manual False True False SYSTEM OFF OFF OFF OFF AC1 Circuit 1 compressors overload Manual False True False CIRCUIT 1 OFF AC2 Circuit 2 compressors overload Manual False True False CIRCUIT 2 OFF Ac1 Compressor 1 overload alarm Manual False True False NO OFF Ac2 Compressor 2 overload alarm Manual False True False NO OFF Ac3 Compressor 3 overload alarm Manual False True False NO OFF Ac4 Compressor 4 overload alarm Manual False True False NO OFF Ac5 Compressor 5 overload alarm Manual False True False NO OFF Ac6 Compressor 6 overload alarm Manual False True False NO OFF A50 General cond. Fan / Pump overload Auto False True False SYSTEM OFF - OFF OFF A51 Circuit 1 cond. Fans overload Auto False True False CIRCUIT 1 OFF - OFF OFF A52 Circuit 2 cond. Fans overload Auto False True False CIRCUIT 2 OFF - OFF OFF 15

16 ALARMS GENERAL LIST Code Alarm Description Reset type Active with unit OFF Alarm relay Warning relay Circuit or System Compr. Pump Evap. Fan Cond. Heaters AF1 Condenser fan / pump 1 overload Auto False True False NO - - OFF - AF2 Condenser fan / pump 2 overload Auto False True False NO - - OFF - AF3 Condenser fan 3 overload alarm Auto False True False NO - - OFF - AF4 Condenser fan 4 overload alarm Semi-Auto False True False NO - - OFF - AF5 Condenser fan 5 overload alarm Semi-Auto False True False NO - - OFF - AF6 Condenser fan 6 overload alarm Semi-Auto False True False NO - - OFF - AF7 Condenser fan 7 overload alarm Semi-Auto False True False NO - - OFF - AF8 Condenser fan 8 overload alarm Semi-Auto False True False NO - - OFF - AF9 Condenser fan 9 overload alarm Semi-Auto False True False NO - - OFF - AF10 Condenser fan 10 overload alarm Semi-Auto False True False NO - - OFF - AF11 Condenser fan 11 overload alarm Semi-Auto False True False NO - - OFF - AF12 Condenser fan 12 overload alarm Semi-Auto False True False NO - - OFF - A61 Comp1 max run hours exceed Auto False False True NO A62 Comp2 max run hours exceed Auto False False True NO A63 Comp3 max run hours exceed Auto False False True NO A64 Comp4 max run hours exceed Auto False False True NO A65 Comp5 max run hours exceed Auto False False True NO A66 Comp6 max run hours exceed Auto False False True NO A71 Analog input 1 alarm Consult A72 Analog input 2 alarm Consult A73 Analog input 3 alarm Consult A74 Analog input 4 alarm Consult A75 Analog input 5 alarm Consult A76 Analog input 6 alarm Consult A77 Analog input 7 alarm Consult A78 Analog input 8 alarm Consult A79 Analog input 9 alarm Consult A80 Analog input 10 alarm Consult A81 Analog input 11 alarm Consult A82 Analog input 12 alarm Consult A83 Analog input 13 alarm Consult A84 Analog input 14 alarm Consult A85 Analog input 15 alarm Consult A86 Analog input 16 alarm Consult A7A Alr. Probe Tin Evaporator Auto True True False SYSTEM OFF OFF OFF OFF A7B Alr. Probe Tout Evaporator1 Auto True True False NO A7C Alr. Probe Tout Evaporator2 Auto True True False NO A7F Alr. Probe Tout Evap Mix Auto True True False NO A7G Alr. Probe DischargePress C1 Auto True True False CIRCUIT 1 OFF A7H Alr. Probe DischargePress C2 Auto True True False CIRCUIT 2 OFF A7K Alr. Probe Tout Auto True True False NO A7L Alr. Probe Remote Set Auto True True False NO A7M Alr. Probe Tout Condenser1 Auto True True False CIRCUIT OFF A7N Alr. Probe Tout Condenser2 Auto True True False CIRCUIT OFF A7Q Alr. Probe T ComboDefrostC1 Auto True True False NO A7R Alr. Probe T ComboDefrostC2 Auto True True False NO A7U Alr. Probe BoilerSafety Auto True True False NO A7V Alr. Probe SuctionPress C1 Auto True True False CIRCUIT 1 OFF A7W Alr. Probe SuctionPress C2 Auto True True False CIRCUIT 2 OFF A7Z Alr. Probe Freecool Temp Auto True True False NO

17 ALARMS GENERAL LIST Code Alarm Description Reset type Active with unit OFF Alarm relay Warning relay Circuit or System Compr. Pump Evap. Fan Cond. Heaters A8A Alr. Probe DischargeTemp C1 Auto True True False NO A8B Alr. Probe DischargeTemp C2 Auto True True False NO A8W Alr. Probe Suct Temp C1 Auto True True False NO A8X Alr. Probe Suct Temp C2 Auto True True False NO A9A Alr. Probe Heat Recovery Temp Auto True True False NO A90 General heaters overload alarm Auto False True False SYSTEM OFF A91 Circuit 1 heaters overload alarm Auto False True False CIRCUIT OFF A92 Circuit 2 heaters overload alarm Auto False True False CIRCUIT OFF Ar1 Heater 1 overload alarm Auto False True False NO OFF Ar2 Heater 2 overload alarm Auto False True False NO OFF Ar3 Heater 3 overload alarm Auto False True False NO OFF Ar4 Heater 4 overload alarm Auto False True False NO OFF AOF Unit OFF Auto False False False NO AFC Freecooling ice alarm Auto False True False NO dp0 General low delta pressure Auto False True False SYSTEM OFF OFF OFF OFF dp1 Circ 1 low delta pressure Auto False True False CIRCUIT 1 OFF - - OFF dp2 Circ 2 low delta pressure Auto False True False CIRCUIT 2 OFF - - OFF dt0 General high discharge temp. Auto False True False SYSTEM OFF OFF OFF OFF dt1 Circ 1 high discharge temp. Auto False True False CIRCUIT 1 OFF - - OFF dt2 Circ 2 high discharge temp. Auto False True False CIRCUIT 2 OFF - - OFF E10 EEV1 Connection Manual True True False CIRCUIT 1 OFF E11 EEV1 Connection Auto True True False NO E12 EEV1 S2 Error Manual False True False CIRCUIT 1 OFF E13 EEV1 S4 Error Manual False True False CIRCUIT 1 OFF E14 EEV1 Pe Error Manual False True False CIRCUIT 1 OFF E15 EEV1 Ext Ref Error Manual False True False CIRCUIT 1 OFF E16 EEV1 NO Refrig. Selected Manual False True False CIRCUIT 1 OFF E17 EEV1 Valve Error Manual False True False CIRCUIT 1 OFF E18 EEV1 Battery low Manual False True False CIRCUIT 1 OFF E19 EEV1 CAN driver diagnostics Manual False True False CIRCUIT 1 OFF E20 EEV2 Connection Manual True True False CIRCUIT 2 OFF E21 EEV2 Connection Auto True True False NO E22 EEV2 S2 Error Manual False True False CIRCUIT 2 OFF E23 EEV2 S4 Error Manual False True False CIRCUIT 2 OFF E24 EEV2 Pe Error Manual False True False CIRCUIT 2 OFF E25 EEV2 Ext Ref Error Manual False True False CIRCUIT 2 OFF E26 EEV2 NO Refrig. Selected Manual False True False CIRCUIT 2 OFF E27 EEV2 Valve Error Manual False True False CIRCUIT 2 OFF E28 EEV2 Battery low Manual False True False CIRCUIT 2 OFF E29 EEV2 CAN driver diagnostics Manual False True False CIRCUIT 2 OFF N01 Network error Auto True True False SYSTEM OFF N02 Master error Auto True False True SYSTEM OFF N03 Alarm node 1 Auto True False True NO N04 Alarm node 2 Auto True False True NO N05 Alarm node 3 Auto True False True NO N06 Alarm node 4 Auto True False True NO N07 Alarm node 5 Auto True False True NO N08 Alarm node 6 Auto True False True NO N09 Alarm node 7 Auto True False True NO N10 Alarm node 8 Auto True False True NO

18 ALARMS GENERAL LIST Code Alarm Description Reset type Active with unit OFF Alarm relay Warning relay Circuit or System Compr. Pump Evap. Fan Cond. Heaters Cn Expansion communication fault Auto True True False NO FC1 FC inv. 1 alarm condition Auto False True False NO OFF FC2 FC inv. 2 alarm condition Auto False True False NO OFF CT1 Alarm Comp 1 High Temp Auto True True False NO OFF CT2 Alarm Comp 2 High Temp Auto True True False NO OFF CT3 Alarm Comp 3 High Temp Auto True True False NO OFF CT4 Alarm Comp 4 High Temp Auto True True False NO OFF CT5 Alarm Comp 5 High Temp Auto True True False NO OFF CT6 Alarm Comp 6 High Temp Auto True True False NO OFF MB1 Modbus Inv 1 Comm. Error Auto False True False NO OFF MB2 Modbus Inv 2 Comm. Error Auto False True False NO OFF AFA Fan default Auto False True False SYSTEM OFF AIT Tout Ice alarm Semi-Auto True True False SYSTEM OFF SL1 Low superheat on C1 Auto False True False CIRCUIT SL2 Low superheat on C2 Auto False True False CIRCUIT SH1 High superheat on C1 Auto False True False NO SH2 High superheat on C2 Auto False True False NO ORW Manual output override Auto True False True NO AX1 Auxiliary alarm 1 Auto False True False NO AX2 Auxiliary alarm 2 Auto False True False NO AX3 Auxiliary alarm 3 Auto False True False NO AX4 Auxiliary alarm 4 Auto False True False NO FRC Free Cooling fan overload Auto False True False NO OIL Oil Pump Overload Auto False True False NO

19 19 We reserve the right to add modifications without prior notice.