Can anyone point me toward a fitting guide on how to change the DHW thermistor? Ive fitted a new Diverter and head a few months ago and all has been well up until i started to display H£ fault this morning 
Ideal H3 Fault thermistor?
- Thread starter petrolheadparr
- Start date
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I am presuming its the dhw thermistor on a ideal isar?
- isolate the power supply and the cold mains and open hw taps
- remove front and bottom covers, followed by securing bracket (underneath boiler - fitted with 4 screws)
- the thermistor is fitted in the r/h manifold, remove securing clip and prize out using a flat blade screwdriver.
-re-fit in reverse order using silicone grease on the thermistor o-ring
- isolate the power supply and the cold mains and open hw taps
- remove front and bottom covers, followed by securing bracket (underneath boiler - fitted with 4 screws)
- the thermistor is fitted in the r/h manifold, remove securing clip and prize out using a flat blade screwdriver.
-re-fit in reverse order using silicone grease on the thermistor o-ring
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