Vaillant ecoTEC pro 28, Инструкция по установке и обслуживанию

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Instructions for installation and servicing ecoTEC
Code Meaning Cause
F.00 Flow–NTC:
NTC broken, NTC cable broken, Defective connection at
NTC, Defective connection at electronics Flow–NTC cable defective/broken, NTC faulty
F.01 Return–NTC:
NTC broken, NTC cable broken, Defective connection at
NTC, Defective connection at electronics Return–NTC cable defective/broken, NTC faulty
F.02 Drinking water outlet probe stopped (<-10 °C)
(800 series only) NTC-connector not plugged in or loose, NTC defective multiconduc-
tor on the electronics not plugged in correctly, cable defective
F.10 Short circuit – flow–NTC (< 130 °C) NTC– plug shorted to casing, NTC defective
F.11 Short circuit – return–NTC (< 130 °C)
NTC defective NTC– plug shorted to casing
F.13 Short circuit in tank sensor NTC defective, earth leak/short circuit in cable loom,
damp plug connection
F.20 Over heat cut off activated Flow probe not correctly thermal-connected or defective, appliance
does not shut down
F.22 Dry fire 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
F.23 Water shortage, temperature spread between flow and
return probe too large Pump blocked or defective, pump output too low
F.24 Water shortage, temperature rise too quick Pump blocked, insufficient pump output, air in appliance, plant pres-
sure too low, flow and return NTC interchanged
F.27 Secondary light, the ionisation signal reports a flame in
spite of gas valve being turned off Secondary light, gas solenoid valves defective, flame detector
defective
F.28 Appliance does not start: Attempts to ignite during start
failed Faults in the gas supply such as:
- Gas meter or gas pressure detector defective
- Air in gas
- Gas flow pressure too low
- Fire protection tap has disengaged
Faults in the gas fitting (main gas magnet or operator defective),
wrong gas setting, igniter (ignition transformer, ignition cable, igni-
tion plug) defective, ionisation current stopped (cable, electrode),
faulty earthing in appliance, electronics defective
F.29 Flame goes off during operation and subsequent ignition
attempts failed Gas supply temporarily stopped, ignition transformer has spark fail-
ure, faulty earthing of appliance
F.32 Fan speed variation (too high on start) Fans blocked, plug not inserted correctly on fan, hall sensor defec-
tive, fault in cable harness, electronics defective
F.60 Gas–valve c defective Short circuit/earth (ground) leak in cable loom to gas valves, gas
valve assembly defective (earth/ground leak from coils), electronic
control system defective
F.61 Gas–valve control – defective Short circuit/earth (ground) leak in cable loom to gas valves, gas
valve assembly defective (earth/ground leak from coils), electronic
control system defective
F.62 Gas valve shutoff delay defective Gas fitting leaking, electronics defective
F.63 EEPROM error Electronics defective
F.64 Electronics/sensor fault Short-circuit in flow or return sensor or electronics defective
F.65 Electronics temperature too high Electronics too hot due to external effect, electronics defective
F.70 No valid DSN in AI and/or BMU Spare part failure AI and motherboard interchanged at same time
F.71 Flow sensor reports constant value Flow sensor is defective
F.72 Flow and/or return sensor fault Flow and/or return sensor is defective
F.73 Water pressure sensor or cable harness hydraulics
defective Line to water pressure sensor is broken or has a short-circuit at 0 V
or water pressure sensor defective
F.74 Water pressure sensor or cable harness defective Line to water pressure sensor has a short-circuit at 5 V / 24 V or
internal fault in water pressure sensor
F.75 No sudden change in pressure was detected on turning
on the pump Water pressure sensor or/and pump defective
Too little water in appliance; check adjustable by-pass
F.76 Overheating protection on primary heat exchanger trig-
gered, damage in primary heat exchanger Cable or cable connection of fuse in the primary heat exchanger
defective, replace primary heat exchanger
Table 8.4 Error codes
8 Troubleshooting