Potterton Promax SL range Installation & Service Instructions Manual page 60
Promax sl series condensing central heating boiler
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Also See for Potterton Promax SL range:
- User manual (12 pages) ,
- User manual (12 pages) ,
- Installation & service instructions manual (60 pages)
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THERMISTOR
Unplug
thermistor,
Is thermistor resistance between
0.5k
& 20k
YES
Plug in
thermistor, leave
8-way connector unplugged.
Is resistance at D between
0.5k
& 20k
YES
Replace PCB.
60
© Baxi Heating UK Ltd 2014
On Flash On
NO
Replace thermistor.
?
NO
Wiring from PCB to
thermistor faulty.
?
Lights
ON
17.0
Fault Finding
Viewed from
Wire Entry end
D
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