Hamworthy Sherborne Series, Инструкция по установке, пусконаладке и обслуживанию

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HAMWORTHY HEATING LTD
SHERBORNE 500001103/E
Figure 12.2. Fault Finding Procedures.
Continued from
Fig 12.1
Does the HSI probe glow?
Is there power to the
ignition controller?
Does the fan speed drop
to the ignition speed after
the 20sec pre-purge?
Does the fan stop (after
the post purge) when on/off
switch set to off position?
Is there a gas valve signal
from the ignition controller?
Does the burner ignite?
Replace HSI probe
Is there power to the
gas valve (230V DC)?
Continued
Ref. Fig 12.3
Replace ignition controller
Replace gas valve
Is the flame signal above
the minimum (1.2µA)?
Is there an HSI signal from
the ignition controller?
Is there power to the
HSI probe?
Check wiring connections
to ignition controller
Check fan control wiring
connections, replace fan
Check fan control wiring
connections, replace fan
Check wiring to ignition
controllerl, replace ignition
controller
Check wiring to gas valve,
replace boiler main PCB
Check wiring from ignition
controller to flame probe,
replace ignition controller
Is flame sensed by the
ignition controller?
(Fascia boiler run indicator
illuminated)
Check wiring connections,
replace ignition controller
Check wiring connections,
replace boiler main PCB
No
No
No
No
No
No
No No
No
No No
Yes
Yes
Yes
Yes
Yes
Yes Yes
Yes
Yes
Yes
Yes
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