Rotex A1 BG Inline - Failures; Fault Code

6 x Faults and failures
27
BA ROTEX A1 BG Inline - 10/2007
6.3 Failures
Tab. 6-1 Possible gas condensing boiler failures
6.4 Fault code
Failure Possible cause Possible solution
Heating system not functioning
(main switch not illuminated,
no display)
No mains voltage
• Switch on boiler main switch
• Switch on heating room main switch
• Switch on house connection fuse
• Troubleshooting by the heating expert
Heating does not warm up Central heating stand-by switched off (e.g. timer is in
economy phase, outside temperature too high)
• Check operating setting
• Check demand parameters
Heating does not warm up enough Heating characteristic too low
• Raise parameter value
Process water not heating up Storage charging stand-by switched off (e.g. timer is in
economy phase)
• Check operating setting
• Check demand parameters
Process water not heating up
enough
Storage tank charging temperature too low
• Raise hot water target temperature
Tapping rate too high
• Reduce the tapping rate, Limit throughput
Burner output too low
• Trouble shooting by the heating expert
Burner does not start Interlocking failure
• Lift the interlocking by briefly pressing the manual button
(max. 5 times per hour).
• Have the heating expert determine and rectify the cause
of failure
Burner fan not running despite
burner demand
No mains voltage on burner fan
• Troubleshooting by the heating expert
Fan motor faulty
• Have it changed by the heating expert
No ignition Ignition electrodes dirty, faulty or incorrectly set
• Trouble shooting by the heating expert
Ignition cable burnt
• Have it changed by the heating expert
Automatic firing unit faulty
• Have it changed by the heating expert
Burner fan not starting despite
burner demand
No mains voltage on burner
• Trouble shooting by the heating expert
Flame monitoring switches off
• Trouble shooting by the heating expert
No gas pressure
• Inspection by the heating expert
Air in the gas line
• Trouble shooting by the heating expert
Gas valve not opening
• Trouble shooting by the heating expert
No ignition
• Trouble shooting by the heating expert
Loud operating noises Wrong burner setting
• Correction by the heating expert
Bearing damage on burner fan
• Trouble shooting by the heating expert
Maximum burner output too low Incorrect setting parameters
• Adjustments by the heating expert
Air/flue gas resistance too high
• Trouble shooting by the heating expert
Fault code Component/name Fault
10-0 External sensor Interruption
10-1 Short circuit
12-0 Mixer circuit inflow sensor Interruption, mixer circuit pump is switched off; mixer motor is made dead
12-1 Short circuit, mixer circuit pump is switched off, mixer motor is switched de-energised
13-0 Hot water storage tank temperature
sensor
Interruption
13-1 Short circuit