10-21-2022, 05:09 AM
A couple of more things to look at:
The AH has brass check valves located in the AH bay. They are located in the three circulation loops. Sometimes they stick. A quick rap with a hammer usually unsticks them. With the zones activated, a quick touch of the inlet and outlet hoses will let you know if coolant is circulating.
There are three cube relays on the AH control panel that control the on/off of the circulation pumps. If the pumps are not turning on, check those relays.
The AH has brass check valves located in the AH bay. They are located in the three circulation loops. Sometimes they stick. A quick rap with a hammer usually unsticks them. With the zones activated, a quick touch of the inlet and outlet hoses will let you know if coolant is circulating.
There are three cube relays on the AH control panel that control the on/off of the circulation pumps. If the pumps are not turning on, check those relays.
Richard and Rhonda Entrekin
99 Newell, 512
Maverick Hybrid Toad
Inverness, FL (when we're home
)