Applies to heaters with a mechanical timer switch.
Make sure that the fuses/breakers of the heater on the electrical panel are in working order. Please note that there are one to three fuses/breakers on the electrical panel, depending on the heater model and electricity system. Make sure that the connection cable of the heater is connected.
Problem: New heater does not heat up after installation - or existing heater stopped heating
- The timer makes a buzzing sound when turned on but the heater does not start heating?
In most cases the problem is related to the overheat protector.
The reset button for the overheat protector is located on the heater thermostat, and there is a small hole in the side of the heater for reset. On some models, the hole is hidden under the thermostat's knob, which must be removed from the heater by gently pulling it outwards by hand. The overheat protector is reset by pressing a button through the hole, for example using a small screwdriver.
- Please note that the heater should be stored for some time in a warm place (+18C / +64F) before resetting the overheat protector.
- Pressing the reset button may require some force as the switch can be very stiff when new.
Cannot reset the button, or the heater does not heat up even after resetting the button?
If the button cannot be reset through the hole in the side of the heater, the reset must be done by opening the side or bottom panel of the heater, depending on the model. Below are pictures of the most common European models:
Please note that resetting the overheat protector or opening the heater for resetting must only be carried out by a qualified electrician!
Locating the reset button inside the heater
The overheat protector reset button (dark red and round) is located on the thermostat. The reset button is circled in the example picture below.
Resetting
- Support the thermostat by hand on one side and press the reset button on the opposite side at the same time so that the thermostat is firmly held in place. You can use a screwdriver to help. The thermostat will make a small click when the reset is successful.
- After the reset, the heater should start heating.
If the overheat protector is triggered again soon, it is essential to have the cause of the triggering checked by an electrician before using the heater!
The most common causes of overheat protection tripping in a new or used heater
- Too many stones in the heater may cause the overheat protector to trip due to weak airflow inside the heater. Stones should not form a high pile on top of the heater.
- The stones disintegrate with use. Therefore, they should be rearranged at least once a year or even more often if the sauna is in frequent use - especially with pillar models. At the same time, any pieces of stones should be removed from the bottom of the heater, and disintegrated stones should be replaced with new ones. Disintegrated stones may reduce the airflow and cause the overheat protector to trip.
- Low temperature may trigger the overheat protector: Storage or transport in cold conditions may cause the overheat protector to trip. The heater must be taken to a warm place well in advance before resetting the overheat protector.
If the new heater is still not heating up after the above steps, contact your dealer, local electrician or alternatively the manufacturer by filling in the contact form: send request - EN