Vaillant aroTHERM plus with uniTOWER plus
Vaillant · Heat pumps · 108 codes · 61 with plain-language explanation
Guides
- Vaillant aroTHERM plus: reading an F code, when a reset is allowed, and the fault list
The manual explains where F codes appear, when a reset is allowed and where the fault list is.
- Vaillant aroTHERM plus: how to check the water pressure (M32, F.22, F.723)
The manual explains how to read the heating circuit pressure and what the related messages mean.
Error codes
- F.022 Building circuit: Water pressure too low with plain-language explanation
- F.042 Fault: Coding resistor with plain-language explanation
- F.073 Sensor fault: Building circ. water pressure with plain-language explanation
- F.094 Fault: Vortex source text only
- F.103 Fault: Spare part ident. with plain-language explanation
- F.1100 Immersion heater: Safety cut-out open with plain-language explanation
- F.1117 Compressor: Phase failure with plain-language explanation
- F.1120 Immersion heater: Phase failure source text only
- F.514 Sensor fault: Compr. inlet temp. with plain-language explanation
- F.517 Sensor fault: Compr. outlet temp. with plain-language explanation
- F.519 Sensor fault: Building circuit return temp. source text only
- F.520 Sensor fault: Building circuit flow temp. source text only
- F.526 Sensor fault: EEV outlet temp. source text only
- F.546 Sensor fault: High pressure with plain-language explanation
- F.582 Fault: EEV source text only
- F.585 Sensor fault: Capac. outlet temp. source text only
- F.703 Sensor fault: Low pressure with plain-language explanation
- F.718 Fan unit 1: Fan blocked with plain-language explanation
- F.729 Compressor outlet temperature too low with plain-language explanation
- F.731 High-pressure switch open with plain-language explanation
- F.732 Compressor outlet temperature too high with plain-language explanation
- F.733 Evaporation temperature too low with plain-language explanation
- F.734 Condensation temperature too low with plain-language explanation
- F.735 Evaporation temperature too high with plain-language explanation
- F.737 Condensation temperature too high with plain-language explanation
- F.741 Building circuit: Return temp. too low with plain-language explanation
- F.752 Fault: Frequency converter with plain-language explanation
- F.753 Connection fault: Freq. conv. n.recogn. source text only
- F.755 Fault: 4-port valve position not correct with plain-language explanation
- F.774 Sensor fault: Air inlet temp. source text only
- F.785 Fan unit 2: Fan blocked with plain-language explanation
- F.788 Building circuit: Pump fault with plain-language explanation
- F.817 Freq. converter fault: Compressor with plain-language explanation
- F.818 Freq. converter fault: Mains voltage with plain-language explanation
- F.819 Freq. converter fault: Overheating with plain-language explanation
- F.820 Connection fault: Building circuit pump with plain-language explanation
- F.821 Sensor fault: Immers. heater flow temp. source text only
- F.823 Hot gas temperature switch open source text only
- F.824 Building circuit: Brine pressure too low (only with intermediate heat exchanger set) source text only
- F.825 Sensor fault: Capac. inlet temp. source text only
- F.9998 Connection fault: Heat pump with plain-language explanation
- M.200 Building circuit : Brine pressure low with plain-language explanation
- M.201 Sensor fault: Cylinder temperature with plain-language explanation
- M.202 Sensor fault: System temperature source text only
- M.203 Connection fault: Display not recognised with plain-language explanation
- M.23 Status external current anode source text only
- M.32 Building circuit: Waterpress. Low with plain-language explanation
- S.100 Standby with plain-language explanation
- S.101 Heating: Compressor shutdown with plain-language explanation
- S.102 Heating: Compressor blocked with plain-language explanation
- S.103 Heating: Prerun source text only
- S.104 Heating: Compressor active with plain-language explanation
- S.107 Heating: Overrun source text only
- S.111 Cooling: Compressor shutdown with plain-language explanation
- S.112 Cooling: Compressor blocked source text only
- S.113 Cooling: Compressor mode prerun source text only
- S.114 Cooling: Compressor active source text only
- S.117 Cooling: Compressor mode overrun source text only
- S.125 Heating: Immersion heater active source text only
- S.132 Domestic hot water: Compressor blocked with plain-language explanation
- S.133 Domestic hot water: Prerun source text only
- S.134 Domestic hot water: Compressor active source text only
- S.135 Domestic hot water: Immersion heater active source text only
- S.137 Domestic hot water: Overrun source text only
- S.141 Heating: Immersion heater shutdown source text only
- S.142 Heating: Immersion heater blocked source text only
- S.151 Domestic hot water: Immersion heater shutdown source text only
- S.152 Domestic hot water: Immersion heater blocked source text only
- S.173 Anti-cycling time for the energy supply company with plain-language explanation
- S.176 External electrical power limitation is active with plain-language explanation
- S.202 Check programme: Purging of building circuit active source text only
- S.203 Actuator test active source text only
- S.212 Connection fault: Control not recognised source text only
- S.240 Compr. oil temp. too low, environment too cold with plain-language explanation
- S.252 Fan unit 1: Fan blocked with plain-language explanation
- S.255 Fan unit 1: Air inlet temp. too high with plain-language explanation
- S.256 Fan unit 1: Air inlet temp. too low with plain-language explanation
- S.260 Fan unit 2: Fan blocked source text only
- S.272 Building circuit: Remaining feed head limit active with plain-language explanation
- S.273 Building circuit: Flow temperature too low with plain-language explanation
- S.275 Building circuit: Flow rate too low with plain-language explanation
- S.276 Building circuit: Lockout contact S20 open with plain-language explanation
- S.277 Building circuit: Pump fault with plain-language explanation
- S.280 Freq. converter fault: Compressor source text only
- S.281 Freq. converter fault: Mains voltage source text only
- S.282 Freq. converter fault: Overheating source text only
- S.283 De-icing time too long with plain-language explanation
- S.284 De-icing flow temperature too low with plain-language explanation
- S.285 Compressor outlet temperature too low source text only
- S.286 Hot gas temperature switch open source text only
- S.287 Fan 1: Wind with plain-language explanation
- S.288 Fan 2: Wind source text only
- S.289 Current limit active with plain-language explanation
- S.290 Switch-on delay active with plain-language explanation
- S.302 High-pressure switch open with plain-language explanation
- S.303 Compressor outlet temperature too high with plain-language explanation
- S.304 Evaporation temperature too low with plain-language explanation
- S.305 Condensation temperature too low source text only
- S.306 Evaporation temperature too high source text only
- S.308 Condensation temperature too high source text only
- S.312 Building circuit: Return temperature too low with plain-language explanation
- S.314 Building circuit: Return temperature too high with plain-language explanation
- S.34 Heating mode: Frost protection source text only
- S.351 Immersion heater: Flow temp. too high source text only
- S.516 De-icing mode active with plain-language explanation
- S.575 Frequency converter: Internal fault with plain-language explanation
- S.581 Connection fault: Frequency converter not recognised source text only
- S.590 Fault: 4-port valve position not correct source text only