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Heat pumps
Heat pumps · Error codes

Vokèra heat pump error codes

Vokèra · A niche brand in the UK. 40 codes across 2 product families, each taken from the manufacturer’s manuals.

Find a Vokèra engineer →40 codes · reviewed 23 September 2026

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Type the code on your display or a word from its meaning. Each code opens its own page with what it means, whether it is safe and what you can check.

40 codes

CodeMeaningStops?Homeowner check?
2
Safety input alarm
Not statedYes
3
Enter water temperature thermistor (EWT)
Not statedYes
4
Actual refrigerant temperature thermistor BPHE
Not statedYes
5
Outdoor air thermistor of GMC
Not statedYes
6
Loss communication to control panel
Not statedYes
7
Control panel room thermistor
Not statedYes
8
Unit capacity mismatch
Not statedYes
9
Flow switch error / water pump
Not statedYes
10
EEPROM corrupt
Not statedYes
11
OAT higher than stop-heat limit
Not statedYes
12
OAT lower than stop-cool limit
Not statedYes
13
Loss communication to RS485 (system configuration type = 6)
Not statedYes
14
Loss of signal from CDU
Not statedYes
15
Leaving water temperature thermistor (LWT)
Not statedYes
17
CDU outdoor air thermistor (TO)
Not statedYes
18
G-Tr short circuit protection
Not statedYes
20
Position detection circuit error
Not statedYes
21
Current sensor error
Not statedYes
22
Outdoor heat exchange sensor (TE) / (TS)
Not statedYes
23
Discharge temperature sensor (TD)
Not statedYes
24
Outdoor fan error
Not statedYes
26
Other outdoor error
Not statedYes
27
Compressor lock
Not statedYes
28
Discharge temperature error
Not statedYes
29
Compressor breakdown
Not statedYes
Er01
High pressure
Not statedYes
Er05
Low pressure
Not statedYes
Er20
Flow switch
Not statedYes
Er30
Water circuit antifreeze
Not statedYes
Er35
High water temperature (< 60 C as printed)
Not statedYes
Er45
Clock fault error
Not statedYes
Er46
Clock to be adjusted error
Not statedYes
Er60
Inlet temperature probe
Not statedYes
Er61
Outlet temperature probe
Not statedYes
Er68
Outside temperature probe fault
Not statedYes
Er75
Condensation pressure probe
Not statedYes
Er80
Configuration error
Not statedYes
Er81
Compressor working hours exceeded
Not statedYes
Er85
Pump working hours exceeded
Not statedYes
Er90
Alarms archive recordings exceeded
Not statedYes