Circuit Breaker for HVAC Question
This AM the circuit breaker on the house panel for the HVAC air handler and thermostats tripped. I reset and it tripped again in about an hour. A technician came out and advised me that the CB on the house panel was 50 amps and on the air handler there was a 60 amp circuit breaker which was also wired to a 30 amp circuit breaker. The 60 amp protects the blower and other components and the 30 amp the heat strips (This is a heat pump). The technician suggested I needed to change the circuit breaker on the house panel because I was actually pulling 90 amps. Now to summarize as I understand it electricity enters the house through the 50 amp circuit breaker and then travels through the 60 amp CB and then for the heat strips travels through the 30 amp CB. This setup has been working this way since 2009, so I am wondering first, is he correct; second, do I need to change the house panel circuit breaker; third, if yes than what amperage should it be? I will appreciate any help you can give me in understanding this.