Appendix
0020214272_04 atmoTEC exclusive, atmoTEC plus Installation and maintenance instructions
33
No.
Work
Annually
As required
13
Carry out a test operation on the product and heating installation including domestic hot water
generation; purge if necessary.
X
14
Perform a test operation of the product and heating installation, including domestic hot water
generation (if available), and purge the system once more if necessary.
X
15
Check the ignition and burner behaviour
X
16
Check the product for gas and water leaks
X
17
Check the flue system and air supply
X
18
Check the safety devices
X
19
Check and record the gas settings for the product
X
20
Log any inspection/maintenance work carried out
X
D
Fault messages
–
Overview
Fault code
Meaning
Possible cause
F. 0
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. 1
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. 2
Interruption: DHW outlet sensor
NTC defective, NTC cable defective, defective plug connection on NTC,
defective plug connection on cylinder electronics
F. 3
Interruption in cylinder temperature
sensor/warm start temperature sensor
NTC defective, NTC cable defective, defective plug connection on NTC,
defective plug connection on cylinder electronics
F. 5
Interruption at external flue gas sensor
Sensor defective, plug not connected, cable defective
F. 6
Interruption at internal flue gas sensor
Sensor defective, plug not connected, cable 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.12
Short circuit: DHW outlet sensor
NTC defective, short circuit in cable harness, cable/housing
F.13
Short circuit in cylinder temperature
sensor/warm start temperature sensor
NTC defective, short circuit in cable harness, cable/housing
F.15
Short circuit in external flue gas sensor
Short circuit in the cable to the housing, sensor defective
F.16
Short circuit in internal flue gas sensor
Short circuit in the cable to the housing, sensor defective
F.20
Safety shutdown: Safety 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
F.22
Safety shutdown: Water deficiency
No or insufficient water in the product, water pressure sensor de-
fective, cable to the pump or to the 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
flue gas temperature too high
Plug not plugged in or loose, safety cut-out plug not plugged in or loose,
interruption in the cable harness, interruption in the cable to the heating
pump, internal air vent does not work, flue gas route blocked or there are
adverse wind conditions, flue pipework is too long, insufficient water in the
heating circuit, heating pump does not work
Activate check programme P.0.
F.26
Gas valve stepper motor current im-
plausible
Gas valve stepper motor not connected, gas valve stepper motor defective,
PCB defective
F.27
Safety shutdown: Flame simulation
Moisture on the electronics, electronics (flame monitor) defective, gas solen-
oid valve leaking
F.28
Failure during start-up: Ignition unsuc-
cessful
Gas meter defective or gas pressure monitor has triggered, air in gas, gas
flow pressure too low, thermal isolator device (TAE) has triggered, incorrect
gas injector, incorrect spare gas valve assembly, fault on the gas valve as-
sembly, multiple plug on PCB incorrectly plugged in, break in cable harness,
ignition system (ignition transformer, ignition cable, ignition plug, ignition
electrode) defective, ionisation flow interrupted (cable, electrode), incorrect
earthing of product, electronics defective
