Ambirad COBRA CB40 Handbuch für Installation, Betrieb, Wartung und Service - Seite 15
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16 Trouble shooting checklist
Ensure Gas and Electricity
supplies are enabled.
Does the red
neon illuminate.
YES
Does the fan
r u n ?
YES
Does the amber
light illuminate after
10s purge?
YES
Does the amber
light illuminate for
10s then go out?
NO
If heater still fails to operate
normally please contact
A m b i - R a d 's
Service Department.
Is there power on
NO
the burner?
C h e c k
1. Wiring harness and plugs.
NO
2. Operation of vacuum switch.
3. Replace fan.
Does the vacuum
NO
switch 'pull in'?
Is the burner
YES
s p a r k i n g ?
C h e c k
1. Burner control.
2. Replace gas valve.
C h e c k
YES
1. Burner controller.
2. Red neon.
C h e c k
NO
1. Operation of any thermostat.
2. Check any external fuses.
C h e c k
1. Check vacuum switch tubes.
2. Check emitter tubes, air inlet
NO
and the flue is not
o b s t r u c t e d .
3. Check operation of vacuum
s w i t c h .
4. Replace fan.
C h e c k
YES
1. Burner controller.
2. Wiring harness.
3. Orange neon.
C h e c k
1. Integrity of spark leads.
NO
2. Integrity of electrode
assembly and spark gap.
3. Burner controller.
YES
NO
C h e c k
1. Burner inlet pressure.
2. Burner nozzle pressure.
3. Check live and neutral polarity
and a good earth is present.
Does the gas
valve open?
YES
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