Error Codes - Vaillant atmoCRAFT VK 654/9 Installations- Und Wartungsanleitung

9 Troubleshooting
9.1

Error codes

For fault finding and fault rectification, the fault signal
facility of the DIA system is normally adequate.
The following fault codes are shown in the display and
help with the localisation and rectification of a fault.
Code Meaning
F.00 Interrruption - forward flow NTC
F.05 Interruption - exhaust gas sensor (accessories)
F.10 Short circuit feed sensor
F.13 Short circuit storage tank sensor
F.15 Short circuit exhaust gas sensor (accessories)
F.20 Safety temperature limiter has responded
Manual release on the STL
F.27 External light: ionisation signal reports a flame in spite
of gas valve being turned off
F.28 Fault in unit start-up: Ignition attempts during start-up
unsuccessful, the unit does not go into operation
F.29 Fault in continuous operation: Flame goes off during
operation and subsequent ignition attempts failed
F.36 Exhaust gas escape sensed by exhaust gas sensor
F.42 No valid value for appliance variant
F.43 No valid value for appliance variant
F.60- 67 Irreversible electronics fault
F.61 Electronics faulty or gas valve not connected correctly
F.64 Irreversible electronics fault
Table 9.1 Error codes
If you need to make measurements on the unit
electronics during fault rectification, observe the
following instructions.
Danger!
Danger of death by electrocution!
If the switchgear box is swung down and the
back wall of the switchgear box is completely
removed, the mains transformer lies directly in
the easily accessible range of the hands.
For this reason, all measurements on the
electronics must only be undertaken with the
switchgear box back-wall in position.
Just open the cover over the connection area,
all measuring points are accessible from here.
Installation and maintenance manual atmoCRAFT
Cause
NTC-connector not plugged in or loose, NTC defective or earth
connection loose/not plugged in
Exhaust gas sensor faulty or not plugged in
Replacement resistance not properly plugged in
NTC plug faulty, mass short/short circuit in wiring harness
NTC plug faulty, mass short/short circuit in wiring harness
Sensor faulty, short circuit in wiring harness, mass short
Feed NTC not thermally connected in
Unit will not switch off
Gas solenoid valve defective, flame detector defective
Faults in the gas supply such as:
- Gas meter or gas pressure monitor faulty
- Air in gas
- Gas flow pressure too low
Fire protection cock has responded
Fault in gas fitting: Main gas magnet or Operator faulty
Incorrect gas setting
Gas supply temporarily stopped, ignition transformer has spark
failure, faulty earthing of appliance
Exhaust gas route blocked or chimney draught too low (e.g.
chimney too cold)(if an exhaust gas sensor is fitted)
Short-circuit in cable harness
Interruption in cable harness
Defective electronics
Coil faulty, plug loose
Electronics is faulty or short-circuit on feed sensor
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.
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
display again.
Troubleshooting 9
GB 37