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Unrelated, but Florida Code requires landlords to ensure working heat, but not cooling. Most heat pumps installed in Florida default to heating mode, and to sw
by davidmurdoch 4y ago
Unrelated, but Florida Code requires landlords to ensure working heat, but not cooling.
Most heat pumps installed in Florida default to heating mode, and to switch to cooling mode a constant 24V needs to be sent to the heat pump's reversing valve. So if that valve, or voltage, ever fails when supposed to be in cooling mode you get cooked to 100F+ temps while you sleep, and burn out your heat pump while you're at it.
- briHass 4y agoMost heat pumps made in the last 2 decades are computer controlled with a wide array of temp and pressure sensors. Stuck reversing valves do happen, but it's likely the unit will shut down due to an ambient outdoor temp, cool temps, or refrigerant pressures that are too high for heating mode. Not much different from a gas furnace. If somehow the computerized safety controls went bad and the unit ran without the blower fan, it would quickly overheat and destroy itself and possibly catch the house on fire. Luckily, these failsafe systems are well engineered with multiple redundancies. They aren't hacked together React apps.