How can I tell if my Sundance spa heater is defective?

Flow Switch Test: You can test to see if the Flow Switch is defective by doing a continuity test on the flow switch by testing the 2 leads from the flow switch with the Pump off (no continuity) and Pump on (continuity). Do not bypass the Flow Switch: this could cause a potential dryfire of the heater and melt down of the heater system.

Why does my Sundance spa go into Oh error code?

Another issue that comes up and is an indication of a bad temp sensor is the temperature reading becomes inaccurate or the spa is going into the OH error code. If you power the spa down and power it back up it may work for a while but will do the same thing again. You need to replace the Temp Sensor. 3. FLO or OH Error Code

Why is my UV bulb not working on my Sundance Spas?

CLOSED or SHORTED FLOW SWITCH ON SYSTEM STARTUP (system disabled) Flow switch is non-functional. This must be repaired only be a Sundance Spas dealer or qualified service technician. UV bulb needs to be replaced. The message will flash between “blb” and the water temperature.

What to do if the main pump is off in Sundance spa?

If debris is present, remove debris, install switch and test system. If condition still exist, replace switch.) if switch measures infinite (no continuity) with pump off, switch is OK, Turn on Main pump and measure across switch terminals for continuity. If continuity is measured, switch is OK.

What to do if your Sundance spa heater is not turning on?

Heater is deactivated and pump may not turn on. Flow/pressure switch is defective. These steps should only be taken after checking and testing the above steps. With the circ pump and the main pump off, test switch operation with an ohmmeter in the continuity position, test for continuity across switch terminals.

How can I tell if my Sundance spa filter is defective?

The only way to test this is to make sure there is no loose debris in the spa, then pull the filter out and see if the flow error goes away, if it does, it is the filter. 2. Defective Circ Pump or Flow Switch: Need to check for Circ Pump operation.

What happens when Sundance spa goes into watchdog?

When the spa goes into the Watchdog the spa will not operate. This is how it happens: When you try to use the spa, you will see 3 or 4 dashes on the control panel (depends upon the model). If you try and reset your breaker, sometimes it comes on but it will probably go back into Watchdog error – – – -.