No Heat or Not Enough Heat - No Error Code Displayed Spa Parts Supply

Here you will find spa and hot tub troubleshooting guides and techniques along with spa and hot tub topside error codes and other information to assist you with your spa or hot tub issues.

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No Heat or Not Enough Heat - No Error Code Displayed

Solution Symptoms: circulation pump or low speed (heating pump) is turning, panel indicator is lit, water is not getting hot.

Configuration: The water heater will not operate with both pumps running simultaneously in high speed when the circuit board is configured for low amp source voltage.

Standard approach:

1. Put hot tub in standard mode and turn up temperature to initiate a heat call (wait 20 to 30 seconds for circuit board to respond).
Is proper voltage present at the heater terminals or outputs?

A. IF YES: Is there current draw from the heater element? A typical heater element 5.5kw at 240 volts will draw approximately 20 to 25 amps.
(use a clamp on amp meter around one of the heater wires.)
Current draw is proof the heater element is working. Make sure the spa water temp continues to rise over time. Typical heating time for 5.5kw heaters at 240 volts is 4 to 6 degrees per hour.

B. IF NO: Is proper voltage present at source terminals and at board where source terminals attach to the board?

1. If no: source voltage problem. Contact an electrician.

2. If yes: Replace circuit board.

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