Hotpoint wd420 error F13 after dryer heater replacement.

28 Oct 2014
Reaction score
United Kingdom
Hotpoint wd420 shows error code f13 after replacing heater element for dryer.

I have bought used wd420 washer dryer. After few days the dryer heating element broke and it was tripping my short circuit switch. So I have disconnected the element (solved tripping circuit) and kept using the machine just for washing. I have bought new heater element and replaced it. I have also tested intake valves (they work ok). But after replacement the washing machine started showing f13. I have also replaced NTC thermistor but that didn't help.

Any ideas?
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F13 is high heat fault. There a 3 versions of heaterbox on thr wd420.. on version 1 and 2 F13 can be ccaused by an open circuit cut out stat. This can occur if the fan jams.. the heat on dry could build uo quickly with no airflow.
Version 3 has a cut out fuse in a yellow sleave which connects to the heater.

A break in the wiring fronm the module could also cause F13

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