Appendix
0020134823_07 ecoTEC plus Installation and maintenance instructions
43
Status code
Meaning
Special cases
S.30
Room thermostat (RT) is blocking heating mode
S.31
Summer mode active or no heat requirement from eBUS control
S.32
Waiting period because of fan speed deviation
S.34
Frost protection mode active
S.36
Target value of the eBUS control is < 20 °C and is blocking heating mode
S.37
Fan waiting period: Fan failure in operation
S.39
"Burner off contact" has triggered (e.g. surface-mounted thermostat or condensate pump)
S.40
Comfort protection mode is active: Product running with limited heating comfort
S.41
Water pressure > 0.6 MPa (6 bar)
S.42
Flue non-return flap response blocks burner operation (only in conjunction with accessory VR40) or condensate pump
defective; heat requirement is blocked
S.44
"Return temperature sensor" comfort protection mode is active; product running with limited heating comfort
S.46
"Flame lost at min. output" comfort protection mode is active; product running with limited heating comfort
S.47
"Flame lost at max. output" comfort protection mode is active; product running with limited heating comfort
S.48
"Deviating fan speed" comfort protection mode is active; product running with limited heating comfort
S.53
Product is within the waiting period of the modulation block/operating block function as a result of water deficiency
(flow/return spread too large)
S.54
Product is within the waiting period of the operating blocking function as a result of water deficiency (temperature gradi-
ent)
S.96
Return sensor test running, heating demands are blocked.
S.97
Water pressure sensor test running, heating demands are blocked.
S.98
Flow/return sensor test running, heating demands are blocked.
E
Overview of fault codes
Code
Meaning
Cause
F.00
Flow temperature sensor interruption
NTC plug not plugged in or has come loose, multiple plug on the PCB
not plugged in correctly, interruption in cable harness, NTC defective
F.01
Return temperature sensor interruption
NTC plug not plugged in or has come loose, multiple plug on the PCB
not plugged in correctly, interruption in cable harness, NTC defective
F.10
Flow temperature sensor short circuit
NTC defective, short circuit in cable harness, cable/housing
F.11
Return temperature sensor short circuit
NTC defective, short circuit in cable harness, cable/housing
F.20
Safety shutdown: Temperature cut-out
Incorrect earth connection between cable harness and product, flow or
return NTC defective (loose connection), stray spark via ignition cable,
ignition plug or ignition electrode, flue gas temperature too high
F.22
Safety shutdown: Water deficiency
No or insufficient water in the product, water pressure sensor defective,
cable to pump or water pressure sensor loose/not connected/defective
F.23
Safety shutdown: Temperature spread too great
Pump blocked, insufficient pump output, air in product, flow and return
NTC connected the wrong way round
F.24
Safety shutdown: Temperature rise too fast
Pump blocked, insufficient pump output, air in product, system pressure
too low, non-return valve blocked/incorrectly installed
F.25
Safety shutdown: Flue gas temperature too high
Break in plug connection for optional flue gas safety cut-out (SCO),
break in cable harness
F.27
Safety shutdown: Flame simulation
Moisture on the electronics, electronics (flame monitor) defective, gas
solenoid valve leaking
F.28
Failure during start-up: Ignition unsuccessful
Gas meter defective or gas pressure switch has triggered, air in gas, gas
flow pressure too low, thermal cut-out has triggered, condensate route
blocked, incorrect gas injector, incorrect spare gas valve assembly, fault
on the gas valve assembly, multiple plug on PCB incorrectly plugged
in, break in cable harness, ignition system (ignition transformer, ignition
cable, ignition plug, ignition electrode) defective, ionisation flow interrup-
ted (cable, electrode), incorrect earthing of product, electronics defective
F.29
Failure during operation: Re-ignition unsuccess-
ful
Gas supply temporarily stopped, flue gas recirculation, condensate route
blocked, defective earthing of product, ignition transformer has spark
failure
Содержание ecoTEC plus VU GB 5-5 Series
Страница 59: ......
