Whale Space Heater problem - speeding fan

AnnB
AnnB Forum Participant Posts: 226
edited September 2020 in Motorhomes #1

We have the Whale heater in our Marquis 115 but recently experiencing problems.

It’s running ok, then out of the blue the fan speeds up and the lock-out lights flash.

Turning the knob (it’s an older version with 2 controls, 1 for power level and the other for temperature) has no effect and cancelling the lock out doesn’t work either. The only way we can stop it is to turn of the main power switch, waiting and then it lets us clear it when we switch back on.

i contacted Whale and they responded very quickly (with an hour) but they haven’t dealt with the problem, just advise on how to clear the lock out.

It doesn’t happen on the lowest power setting, just the middle one (haven’t tried the top one), the inlet isn’t blocked so I’m at a loss.

Any ideas or suggestions on how to prevent this happening?