Cool Energy · A niche brand in the UK. 251 codes across 7 product families, each taken from the manufacturer’s manuals. Cool Energy technical support ↗
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251 codes
| Code | Meaning | Stops? | Homeowner check? |
|---|---|---|---|
| AL001 | Too many mem writings | Yes | Yes |
| AL002 | Retain mem write error | Yes | Yes |
| AL003 | Inlet probe error | Yes | Yes |
| AL004 | Outlet probe error | Yes | Yes |
| AL005 | Ambient probe error | Yes | Yes |
| AL006 | Condenser coil temp | Yes | Yes |
| AL007 | Water flow switch | Yes | Yes |
| AL008 | Phase sequ.prot.alarm | Yes | Yes |
| AL009 | Unit work hour warning | No | Yes |
| AL010 | Pump work hour warning | No | Yes |
| AL011 | Comp.work hour warning | No | Yes |
| AL012 | Cond.fan work hourWarn | No | Yes |
| AL013 | Low superheat - Vlv.A | Yes | Yes |
| AL014 | Low superheat - Vlv.B | Yes | Yes |
| AL015 | LOP - Vlv.A | Yes | Yes |
| AL016 | LOP - Vlv.B | Yes | Yes |
| AL017 | MOP - Vlv.A | Yes | Yes |
| AL018 | MOP - Vlv.B | Yes | Yes |
| AL019 | Motor error - Vlv.A | Yes | Yes |
| AL020 | Motor error - Vlv.B | Yes | Yes |
| AL021 | Low suct.temp. - Vlv.A | Yes | Yes |
| AL022 | Low suct.temp. - Vlv.B | Yes | Yes |
| AL023 | High condens.temp.EVD | Yes | Yes |
| AL024 | Probe S1 error EVD | Yes | Yes |
| AL025 | Probe S2 error EVD | Yes | Yes |
| AL026 | Probe S3 error EVD | Yes | Yes |
| AL027 | Probe S4 error EVD | Yes | Yes |
| AL028 | Battery discharge EVD | Yes | Yes |
| AL029 | EEPROM alarm EVD | Yes | Yes |
| AL030 | Incomplete closing EVD | Yes | Yes |
| AL031 | Emergency closing EVD | Yes | Yes |
| AL032 | FW not compatible EVD | Yes | Yes |
| AL033 | Config. error EVD | Yes | Yes |
| AL034 | EVD Driver offline | Yes | Yes |
| AL035 | BLDC-alarm:High startup DeltaP | Yes | Yes |
| AL036 | BLDC-alarm:Compressor shut off | Yes | Yes |
| AL037 | BLDC-alarm:Out of Envelope | Yes | Yes |
| AL038 | BLDC-alarm:Starting fail wait | Yes | Yes |
| AL039 | BLDC-alarm:Starting fail exceeded | Yes | Yes |
| AL040 | BLDC-alarm:Low delta pressure | Yes | Yes |
| AL041 | BLDC-alarm:High discarge gas temp | Yes | Yes |
| AL042 | Envelope-alarm:High compressor ratio | Yes | Yes |
| AL043 | Envelope-alarm:High discharge press. | Yes | Yes |
| AL044 | Envelope-alarm:High current | Yes | Yes |
| AL045 | Envelope-alarm:High suction pressure | Yes | Yes |
| AL046 | Envelope-alarm:Low compressor ratio | Yes | Yes |
| AL047 | Envelope-alarm:Low pressure diff. | Yes | Yes |
| AL048 | Envelope-alarm:Low discharge pressure | Yes | Yes |
| AL049 | Envelope-alarm:Low suction pressure | Yes | Yes |
| AL050 | Envelope-alarm:High discharge temp. | Yes | Yes |
| AL051 | Power+ alarm:01-Overcurrent | Yes | Yes |
| AL052 | Power+ alarm:02-Motor overload | Yes | Yes |
| AL053 | Power+ alarm:03-DCbus overvoltage | Yes | Yes |
| AL054 | Power+ alarm:04-DCbus undervoltage | Yes | Yes |
| AL055 | Power+ alarm:05-Drive overtemp. | Yes | Yes |
| AL056 | Power+ alarm:06-Drive undertemp. | Yes | Yes |
| AL057 | Power+ alarm:07-Overcurrent HW | Yes | Yes |
| AL058 | Power+ alarm:08-Motor overtemp. | Yes | Yes |
| AL059 | Power+ alarm:09-IGBT module error | Yes | Yes |
| AL060 | Power+ alarm:10-CPU error | Yes | Yes |
| AL061 | Power+ alarm:11-Parameter default | Yes | Yes |
| AL062 | Power+ alarm:12-DCbus ripple | Yes | Yes |
| AL063 | Power+ alarm:13-Data comm. Fault | Yes | Yes |
| AL064 | Power+ alarm:14-Thermistor fault | Yes | Yes |
| AL065 | Power+ alarm:15-Autotuning fault | Yes | Yes |
| AL066 | Power+ alarm:16-Drive disabled | Yes | Yes |
| AL067 | Power+ alarm:17-Motor phase fault | Yes | Yes |
| AL068 | Power+ alarm:18-Internal fan fault | Yes | Yes |
| AL069 | Power+ alarm:19-Speed fault | Yes | Yes |
| AL070 | Power+ alarm:20-PFC module error | Yes | Yes |
| AL071 | Power+ alarm:21-PFC overvoltage | Yes | Yes |
| AL072 | Power+ alarm:22-PFC undervoltage | Yes | Yes |
| AL073 | Power+ alarm:23-STO DetectionError | Yes | Yes |
| AL074 | Power+ alarm:24-STO DetectionError | Yes | Yes |
| AL075 | Power+ alarm:25-Ground fault | Yes | Yes |
| AL076 | Power+ alarm:26-Internal error 1 | Yes | Yes |
| AL077 | Power+ alarm:27-Internal error 2 | Yes | Yes |
| AL078 | Power+ alarm:28-Drive overload | Yes | Yes |
| AL079 | Power+ alarm:29-uC safety fault | Yes | Yes |
| AL080 | Power+ alarm:98-Unexpected restart | Yes | Yes |
| AL081 | Power+ alarm:99-Unexpected stop | Yes | Yes |
| AL082 | Power+ safety alarm:01-Current meas.fault | Yes | Yes |
| AL083 | Power+ safety alarm:02-Current unbalanced | Yes | Yes |
| AL084 | Power+ safety alarm:03-Over current | Yes | Yes |
| AL085 | Power+ safety alarm:04-STO alarm | Yes | Yes |
| AL086 | Power+ safety alarm:05-STO hardware alarm | Yes | Yes |
| AL087 | Power+ safety alarm:06-PowerSupply missing | Yes | Yes |
| AL088 | Power+ safety alarm:07-HW fault cmd.buffer | Yes | Yes |
| AL089 | Power+ safety alarm:08-HW fault heater c. | Yes | Yes |
| AL090 | Power+ safety alarm:09-Data comm. Fault | Yes | Yes |
| AL091 | Power+ safety alarm:10-Compr. stall detect | Yes | Yes |
| AL092 | Power+ safety alarm:11-DCbus over current | Yes | Yes |
| AL093 | Power+ safety alarm:12-HWF DCbus current | Yes | Yes |
| AL094 | Power+ safety alarm:13-DCbus voltage | Yes | Yes |
| AL095 | Power+ safety alarm:14-HWF DCbus voltage | Yes | Yes |
| AL096 | Power+ safety alarm:15-Input voltage | Yes | Yes |
| AL097 | Power+ safety alarm:16-HWF input voltage | Yes | Yes |
| AL098 | Power+ safety alarm:17-DCbus power alarm | Yes | Yes |
| AL099 | Power+ safety alarm:18-HWF power mismatch | Yes | Yes |
| AL100 | Power+ safety alarm:19-NTC over temp. | Yes | Yes |
| AL101 | Power+ safety alarm:20-NTC under temp. | Yes | Yes |
| AL102 | Power+ safety alarm:21-NTC fault | Yes | Yes |
| AL103 | Power+ safety alarm:22-HWF sync fault | Yes | Yes |
| AL104 | Power+ safety alarm:23-Invalid parameter | Yes | Yes |
| AL105 | Power+ safety alarm:24-FW fault | Yes | Yes |
| AL106 | Power+ safety alarm:25-HW fault | Yes | Yes |
| AL107 | Power+ safety alarm:26-reseved | Yes | Yes |
| AL108 | Power+ safety alarm:27-reseved | Yes | Yes |
| AL109 | Power+ safety alarm:28-reseved | Yes | Yes |
| AL110 | Power+ safety alarm:29-reseved | Yes | Yes |
| AL111 | Power+ safety alarm:30-reseved | Yes | Yes |
| AL112 | Power+ safety alarm:31-reseved | Yes | Yes |
| AL113 | Power+ safety alarm:32-reseved | Yes | Yes |
| AL114 | Power+ alarm:Power+ offline | Yes | Yes |
| AL115 | EEV alarm:Low superheat | Yes | Yes |
| AL116 | EEV alarm:LOP | Yes | Yes |
| AL117 | EEV alarm:MOP | Yes | Yes |
| AL118 | EEV alarm:High condens.temp. | Yes | Yes |
| AL119 | EEV alarm:Low suction temp. | Yes | Yes |
| AL120 | EEV alarm:Motor error | Yes | Yes |
| AL121 | EEV alarm:Self Tuning | Yes | Yes |
| AL122 | EEV alarm:Emergency closing | Yes | Yes |
| AL123 | EEV alarm:Temperature delta | Yes | Yes |
| AL124 | EEV alarm:Pressure delta | Yes | Yes |
| AL125 | EEV alarm:Param.range error | Yes | Yes |
| AL126 | EEV alarm:ServicePosit% err | Yes | Yes |
| AL127 | EEV alarm:ValveID pin error | Yes | Yes |
| AL128 | Low press alarm | Yes | Yes |
| AL129 | High press alarm | Yes | Yes |
| AL130 | Disc.temp.probe error | Yes | Yes |
| AL131 | Suct.temp.probe error | Yes | Yes |
| AL132 | Disc.press.probe error | Yes | Yes |
| AL133 | Suct.press.probe error | Yes | Yes |
| AL134 | Tank temp.probe error | Yes | Yes |
| AL135 | EVI SuctT.probe error | Yes | Yes |
| AL136 | EVI SuctP.probe error | Yes | Yes |
| AL137 | Flow switch alarm | Yes | Yes |
| AL138 | High temp. alarm | Yes | Yes |
| AL139 | Low temp. alarm | Yes | Yes |
| AL140 | Temp.delta alarm | Yes | Yes |
| AL141 | EVI alarm:Param.range error | Yes | Yes |
| AL142 | EVI alarm:Low superheat | Yes | Yes |
| AL143 | EVI alarm:LOP | Yes | Yes |
| AL144 | EVI alarm:MOP | Yes | Yes |
| AL145 | EVI alarm:High condens.temp. | Yes | Yes |
| AL146 | EVI alarm:Low suction temp. | Yes | Yes |
| AL147 | EVI alarm:Motor error | Yes | Yes |
| AL148 | EVI alarm:Self Tuning | Yes | Yes |
| AL149 | EVI alarm:Emergency closing | Yes | Yes |
| AL150 | EVI alarm:ServicePosit% err | Yes | Yes |
| AL151 | EVI alarm:ValveID pin error | Yes | Yes |
| E0 | Error of sensor T5U (upper water temperature sensor) | Partly | Yes |
| E1 | Error of sensor T5L (lower water temperature sensor) | Partly | Yes |
| E2 | Tank and Wired Controller communication error | Partly | Yes |
| E4 | Evaporator temperature sensor T3 error | Partly | Yes |
| E004 | Freezing - temperature in the heat pump below 4C | Not stated | Yes |
| E5 | Ambient temperature sensor T4 error | Partly | Yes |
| E005 | Overheating (temperature >85C, electronic regulator failure) | Not stated | Yes |
| E6 | Compressor discharge temperature sensor TP error | Partly | Yes |
| E006 | Mg anode error | Partly | Yes |
| E7 | Heat Pump system error | Partly | Yes |
| E007 | Volume and/or temperature sensors error | Not stated | Yes |
| E8 | Electric leakage error | Partly | Yes |
| E9 | Compressor suction temperature sensor TH error | Partly | Yes |
| E042 | Anti-legionella function error | Not stated | Yes |
| E247 | Defrosting error | Partly | Yes |
| E361 | External air sensor error | Partly | Yes |
| E363 | Defrosting sensor error | Partly | Yes |
| Ed | E-EPROM chip error | Partly | Yes |
| EE | E-heater open-circuit error (IEH current difference e-heater on/off <1 A) | Partly | Yes |
| EF | Clock chip error | Partly | Yes |
| Er01 | PCB / Wire Controller Fault | Yes | Yes |
| Er02 | Missing phase | Yes | Yes |
| Er03 | Insufficient water flow | Yes | Yes |
| Er04 | Antifreeze protection | Varies by model | Yes |
| Er05 | High refrigerant pressure | Yes | Yes |
| Er06 | Ambient temperature probe fault | Yes | Yes |
| Er07 | Compressor discharge probe fault | Yes | Yes |
| Er08 | Controller and PCB communication fault | No | Yes |
| Er09 | Communication failure | Varies by model | Yes |
| Er10 | Communication failure of inverter driver module (occurs when communication between outer board and driver board is disconnected) | Yes | Yes |
| Er11 | Over current protection | Yes | Yes |
| Er12 | Discharge temperature too high | Yes | Yes |
| Er13 | Water pressure fault | Yes | Yes |
| Er14 | Water tank temperature sensor fault | Yes | Yes |
| Er15 | Water inlet temperature sensor fault | Yes | Yes |
| Er16 | Evaporator coil temperature sensor fault | Yes | Yes |
| Er18 | Discharge temperature fault | Yes | Yes |
| Er19 | Return air probe fault | Yes | Yes |
| Er20 | Abnormal protection of frequency conversion module | Yes | Yes |
| Er21 | Ambient temperature sensor fault | Yes | Yes |
| Er22 | Cooling water temperature too low | Yes | Yes |
| Er23 | Cooling outlet water temperature supercooling protection | Yes | Yes |
| Er24 | Self check fault | Yes | Yes |
| Er25 | Antifreeze protection | Partly | Yes |
| Er26 | Heat sink temperature fault | Yes | Yes |
| Er27 | Outlet water temperature sensor fault | Yes | Yes |
| Er28 | High Pressure Fault | Yes | Yes |
| Er29 | Return gas temperature sensor fault | Yes | Yes |
| Er30 | Ambient temperature low protection | Yes | Yes |
| Er31 | Water pressure switch fault (troubleshooting table 'Error code 31'; not in common code table) | Yes | Yes |
| Er32 | High outlet water temperature fault | Yes | Yes |
| Er33 | Coil temperature too high | Yes | Yes |
| Er34 | The temperature of inverter driver module is too high | Yes | Yes |
| Er35 | Compressor over current protection | Yes | Yes |
| Er37 | Inlet / outlet water temp differential too high protection | Yes | Yes |
| Er42 | Cooling coil temperature sensor failure | Yes | Yes |
| Er44 | Ambient temp too low | Yes | Yes |
| Er45 | Cooling coil temperature fault | Yes | Yes |
| Er62 | Inlet temperature fault of economizer | Yes | Yes |
| Er63 | Outlet temperature failure of economizer | Yes | Yes |
| Er64 | DC fan 1 fault | Yes | Yes |
| Er66 | DC fan 2 fault | Yes | Yes |
| Er67 | Low pressure switch failure | Yes | Yes |
| Er68 | High pressure switch failure | Yes | Yes |
| Er69 | Low pressure protection | Yes | Yes |
| Er70 | High pressure protection | Yes | Yes |
| LA | Ambient temperature T4 outside heat pump running range (-7 to 43C) - heat pump stops (units without e-heater only) | Partly | Yes |
| P1 | System high pressure protection (>=2.76 MPa active, <=2.07 MPa inactive) | Partly | Yes |
| P2 | High discharge temperature protection (Tp >115C active, <90C inactive) | Partly | Yes |
| P3 | Compressor abnormally stopped protection | Partly | Yes |
| P4 | Compressor overloaded protection (current >10 A compressor only, or >IEH+10 with e-heater, checked 10 s after start) | Partly | Yes |
| VF01 | Driver board fault: Starting overcurrent | Yes | Yes |
| VF02 | Driver board fault: Speed up overcurrent | Yes | Yes |
| VF03 | Driver board fault: Decelerate overcurrent | Yes | Yes |
| VF04 | Driver board fault: Average speed overcurrent | Yes | Yes |
| VF05 | Driver board fault: Speed up overvoltage | Yes | Yes |
| VF06 | Driver board fault: Decelerate overvoltage | Yes | Yes |
| VF07 | Driver board fault: Average speed overvoltage | Yes | Yes |
| VF08 | Driver board fault: IDLE mode excessive voltage | Yes | Yes |
| VF10 | Driver board fault: Input phase loss | Yes | Yes |
| VF11 | Driver board fault: Output phase loss | Yes | Yes |
| VF12 | Driver board fault: Device protection | Yes | Yes |
| VF13 | Driver board fault: Overheat | Yes | Yes |
| VF14 | Driver board fault: Overload | Yes | Yes |
| VF15 | Driver board fault: Compressor overload | Yes | Yes |
| VF17 | Driver board fault: Overload | Yes | Yes |
| VF18 | Driver board fault: Excessive speed | Yes | Yes |
| VF19D | Driver board fault: Excessive shaft current | Yes | Yes |
| VF20Q | Driver board fault: Excessive shaft current | Yes | Yes |
| VF21 | Driver board fault: Storage failed | Yes | Yes |
| VF22 | Driver board fault: Abnormal communication | Yes | Yes |
| VF23 | Driver board fault: Current detection | Yes | Yes |
| VF25 | Driver board fault: Start blocked rotor | Yes | Yes |
| VF26 | Driver board fault: Run blocked rotor | Yes | Yes |
| VF27 | Driver board fault: Heat dissipation detection | Yes | Yes |
| VF28 | Driver board fault: Compressor running speed fault | Yes | Yes |
| VF29 | Driver board fault: Interrupt overflow 1 | Yes | Yes |
| VF30 | Driver board fault: Interrupt overflow 2 | Yes | Yes |
| VF31 | Driver board fault: Start rotor shaking | Yes | Yes |
| VF32 | Driver board fault: Run rotor shaking | Yes | Yes |