Check the settings in the heat pump manual. The service display displays V, the gas boiler is switched off. Call a heat pump repair technician to make the adjustment or, if you are handy with this type of repair, follow the instructions in your owner’s manual to reset the pointers on the fan side of the limit control. We are looking for the reset button it is a Klixon CGJ36CD. Heat Pump troubleshooting. If the outdoor unit circuit breaker was tripped, reset it. Others such as that shown in our photograph have to be reset manually by pushing the button … Coils are clean inside and out. Hannabery HVAC installs heat pumps, air conditioners, furnaces, boilers, water heaters, whole-home generators, ductwork, and indoor air quality products. there could be a fuse on circuit board and you could have some in the disconnect open disconnect and check for fuses and check for fuses at the circuit board the one on the board you can pull out and see inside if the small metal line is broken its bad . Now tech says need to replace drier for possible restriction.