AP5 guides in this system
Propane appliances
The furnace, the water heater and the absorption fridge burn propane but rely on the 12-volt battery for their controls, so a weak battery is the first suspect when one quits; the rooftop AC lives here too. Pick the appliance below, or decode a code on the display. If you smell gas, close the tank valve and get everyone out.
Fast route to a fix
No heat
A furnace that won't light, blows cold, or leaves rooms cold.
A warm fridge
Level first, then gas or electric, the vents and the door.
The rooftop AC
Weak cooling, ice on the coil, water inside, and yearly care.
Propane supply, alarms and codes
How the gas reaches the appliances, and what a panel or an alarm is telling you.
