Table of Contents
Advertisement
Status code
Parameter
S.34
Heating mode: Frost protection
S.36
Target value for ext. controller lower than 20 °C
S.37
Waiting time: Deviation in fan speed
S.39
Contact thermostat triggered
S.40
Comfort protection active
S.41
Water pressure too high
S.42
Flue non-return flap closed
S.46
Comfort protection: Minimum load, loss of flame
S.53
Waiting time: Water shortage
S.54
Waiting time: Water shortage
S.55
Waiting time: CO sensor
S.56
Waiting time: CO limit value exceedance
S.57
Waiting time: Measuring program
S.58
Burner modulation limitation
S.59
Waiting time: Water circulation vol.
S.76
Service message: Check water pressure
S.85
Service message: Check water circulation volume
S.86
Service message: Check vortex sensor
S.87
Service message: Check differential pressure sensor
S.88
Purging programme is running
S.92
Water circulation volume self-test
S.93
Flue gas measurement not possible
S.96
Return temperature sensor self-test
S.97
Water pressure sensor self-test
S.98
Flow/return temperature sensor self-test
S.99
Vaillant self-test
S.105
Unit not purged
E
Overview of fault codes
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Code
Parameter
F.00
Interruption: Flow sensor
F.01
Interruption: Return sensor
F.02
Interruption: DHW outlet sensor
0020189875_01 ecoTEC exclusive Installation and maintenance instructions
Meaning
Frost protection mode active
Reference setting for continuous controller 7-8-9 or
eBUS controller is < 20°C and blocks the heating mode
Waiting period: Fan failure in operation
"Burner off contact" has responded (e.g. surface-moun-
ted thermostat or condensate pump)
Comfort protection mode is active: Product running with
limited heating comfort
Water pressure > 2.8 bar
Flue non-return flap response blocks burner operation
(only in conjunction with accessory VR40) or condensate
pump defective; heat requirement is blocked
Comfort protection mode, flame loss at minimum load
Product is within the waiting period of the modulation
block/operating block function as a result of water defi-
ciency (flow/return spread too large)
Product is within the waiting period of the operating
blocking function as a result of water deficiency
(temperature gradient)
Waiting period: CO sensor
Waiting period: CO limit value exceedance
Calibration unsuccessful. Waiting period, comfort protec-
tion mode
Modulation limitation due to noise/wind
Minimum circulation water volume
System pressure too low. Top up water.
Service message: Check water circulation volume
Service message: Check vortex sensor
Service message: Check differential pressure sensor
Purging programme is running
Water circulation volume self-test
Flue gas analysis not possible because not all measur-
ing programmes have yet run
Return sensor test running, heating demands are
blocked.
Water pressure sensor test running, heating demands
are blocked.
Flow/return sensor test running, heating demands are
blocked.
Self-test
Unit not purged (D.130 = 0: No bypass valve)
Possible causes
NTC plug not plugged in or has come loose, multiple plug on the PCB
not plugged in correctly, interruption in cable harness, NTC defective
NTC plug not plugged in or has come loose, multiple plug on the PCB
not plugged in correctly, interruption in cable harness, NTC defective
Only in conjunction with F.91
NTC defective, NTC cable defective, defective plug connection on NTC,
defective plug connection on the actoSTOR electronics
Appendix
39
Advertisement
Table of Contents
