Error Codes; Error Memory - Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

9.1.3

Error codes

The error codes displace all other displays when errors
occur.
If many errors occur simultaneously, the relevant error
codes are displayed alternately for approx. 2 seconds
each.
9.1.4

Error memory

The last ten errors are saved in the appliance error
memory.
> Press the "i" and "-" buttons simultaneously.
> Scroll back in the error memory with the "+" button.
Code Meaning
F.0 Interruption feed temperature sensor (NTC):
F.1 Interruption return temperature sensor (NTC):
F.10 Short-circuit in feed temperature sensor
F.11 Short-circuit in return temperature sensor
F.13 Short-circuit on heat retention storage tank sensor
F.20 Safety temperature limiter actuated
F.22 Dry fire
Water shortage, temperature spread between
F.23
flow and return probe too large
F.24 Water shortage, temperature rise too quick
F.25 Interruption in cable harness
F.27 External light:
Appliance does not start: Attempts to ignite
F.28
during start failed
Flame goes off during operation and subsequent
F.29
ignition attempts failed
F.32 Speed deviation Fan
F.49 eBUS undervoltage
F.61 Gas valve control faulty
F.62 Gas valve shutoff delay defective
F.63 EEPROM faulty
F.64 Electronics/sensor fault
F.65 Electronics temperature too high
F.67 Flame monitor input signal is outside the limits (0 or 5 V) electronics defective
F.70 No valid appliance variant for display and/or electronics
Table 9.4 Error codes
Installation and maintenance instructions ecoTEC exclusive 0020017768_07
You can exit the error memory display as follows:
> Press the "i" button or
> Do not press any button for about 4 minutes.
The current heating flow temperature appears in the dis-
play again.
Cause
NTC faulty, NTC cable faulty, faulty plug connection on NTC,
faulty plug connection on the electronics
NTC faulty, NTC cable faulty, faulty plug connection on NTC,
faulty plug connection on the electronics
Sensor plug has mass short to the casing, short-circuit in
wiring loom, sensor faulty
Sensor plug has mass short to the casing, short-circuit in
wiring loom, sensor faulty
Sensor plug has mass short to the casing, short-circuit in
wiring loom, sensor faulty
Flow probe not connected thermally correct or defective,
appliance does not shut down
Too little water in the appliance, water shortage switch defective,
cable to pump or water shortage switch defective, pump blocked
or defective, pump output too low
Pump blocked or defective, pump output too low, flow and return
sensor swapped over
Pump blocked, low output from the pump, air in appliance, system
pressure too low
Cable harness faulty
Gas solenoid valve defective, flame detector defective
Faults in the gas supply such as:
- Gas meter or gas pressure detector defective
- Air in gas
- Gas flow pressure too low
- Main gas cock closed
Faults in the gas fitting, wrong gas setting, igniter (ignition
transformer, ignition cable, ignition plug) defective, ionisation
current stopped (cable, electrode), faulty earthing in appliance,
electronics defective
Gas supply temporarily stopped, ignition transformer has spark
failure, faulty earthing of appliance
Fans blocked, plug not inserted correctly on fan, hall sensor
defective, fault in cable harness, electronics defective
Short-circuit on eBUS input, eBUS overload or two power
supplies with different polarities on the eBUS
Short-circuit to mass in cable harness to the gas valves,
installation fault on gas valve (short-circuit, mass short in the coils)
electronics faulty
Gas fitting leaking, electronics defective
Electronics defective
Short-circuit in flow or return sensor or electronics defective
Electronics too hot due to external effect, electronics defective
Spare part case: Display and electronics changed at the same
time appliance variant not re-set
Troubleshooting 9
53