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APEN GROUP reserves the right to change products and documents as required.
code HG0109.12GB ed.C-1106 rev.12
WARM AIR HEATER SERIES RAPID
7.
DIAGNOSTICS
Heaters include a diagnostic system that is activated in case of ill functioning. A steady red LED lights up on heater front panel
when a fault occurs.
To reset the fault, press RESET button for more than 1 sec. RESET button is on front panel (see figure on page 21).
Maximum number of RESET attempts allowed is 3. If the failure persists, call Service Center for assistance.
To activate diagnostics and find out fault type, press RESET button for more than 5 secs. Red LED will start flashing in sequen
-
ces separated by a pause of 2 secs. The number of flashes in each sequence indicates the fault number. Check in the following
table fault numbers and relevant meaning.
Fault Codes Meaning
Number of flashes
Possible reason
1. Flash
No detection of flame signal and timeout of safety card exceeded:
- Detection electrode wrongly positioned
- No fuel
- Fuel valves not working properly
- Faulty start-up transformer
- Burner damper wrongly set
2 Flashes
Safety Thermostat Opening:
- Activation of Safety Thermostat
- Faulty Safety Thermostat
3 flashes
Not applicable
4 flashes
Not applicable
5 flashes
Faulty Hall sensor of Burner Motor:
- Motor revolutions per minutes are less than set value
6 flashes
Secondary flames at startup
7 flashes
Not applicable
8 flashes
Generic fault
