#defrost board

Tech Tips:

Heat Pump Defrost Boards and W2
If you are used to simple, straight-cool split systems, you know that the low voltage to the outdoor unit is usually VERY simple. In many cases, there's just a Y (contactor power) and a C (common) connected to the outdoor unit. When the condensing unit controls are strictly two-wire low voltage, there is no continuous […]
Read more

Users with Tag #defrost board

loading

To continue you need to agree to our terms.

The HVAC School site, podcast and tech tips
made possible by generous support from