Hi,
Keep getting the blinking light on the control panel. Flashes 4 times it say's it means that the thermal protection device is open. O.K. what does that mean . And can I fix or do I have to call a repair man
Thanks
Jimmyd

Go here.

https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313-2.html#post269193

And here.

https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313-2.html#post269282