Polar HMR Timer Switch | Polar Sauna heater timer

This is a common wear part and is often what needs replaced. If the heater will not time down but still works then it is indeed in need of a timer. You may perform a continuity on the leads of the timer to determine if it is conducting electricity when it is in the “ON” position.

HMR Timer with 1-9 hr pre-set Part # 3140-504

Other parts are available as well. To supply to correct parts for your sauna we need to know the make and model. The common parts are: timers, thermostats, hi limit/resets, contactors and electrical terminal strips. Some of the older sauna heater parts are no longer available.