Hayward HCB110BTA, Troubleshooting Manual

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Heat Pro and Summit heat pumps generally operate in the same fashion. Power is connected to
the contactor per the installation instructions. Ensure the water line ‘in’ and ‘out’ connections are
correct. Set the control for pool or spa operation. Adjust the thermostat setpoint above the water
temperature. In approximately 3 to 5 minutes the heat pump will begin ‘heating’. This 3 to 5 minute
delay is important as it protects the compressor from short cycling. This time delay is part of the
control circuit of the heat pump.
Hayward Heat Pro units have a 5 minute delay during which no operation will occur.
Summit brand units have a 3 minute delay, but the fan will come on immediately once the heat pump
is turned on and the thermostat raised to a setpoint above the pool temp.
The time delay will delay the start of the heat pump any time power is interrupted to the heat pump.
When the heat pump satisfies the thermostat and shuts off, the time delay will not allow
the heat pump to restart for 3-5 minutes.
The thermostat will turn the heat pump on and off
as needed to keep the pool at the desired temperature.
Note : Heat pumps will not operate when the pool pump is off.
Basic Operation of Heat Pump