Issue Frontier 390

[carlos33]

Good morning could someone please help me please

 

When you start the machine shows the message  P1, P2, P3, P4 heater safety thermostat activated and turned heater off,  after rebooting many times the machine starts working normally again, sometimes only shows P1, P2, and other times shows all, P1,P2,P3,P4

I cleaned circulation pumps, I checked temperature sensors and safety thermostats everything is fine just do not understand why this happens when starting machine. 

The problem is only in the morning, once temperature reaches its working fine all day. 

 

I thank you in advance.

[pckush]

Did u service your machine?try to do A full service your machine  & check the sensors