The OH Light comes on. I know that means Over Heating but, our Hot Tub has never gotten over 104 degrees. In Fact when I noticed the OH light was on, the temp was only 100 degrees. I cut it off and let the tub sit for quite awhile turned it back on and the temperature was about 88 degrees. The OH Light was flashing so I pressed the jets and they come on and the OH Light disappeared. I waited about 10 min and the OH Light was on again. I repeated this procedure several time but the OH Light keeps coming back on? Have any answers and is this something I can fix on my on?
SOURCE: QCA Opal hot tub display reading OH.
The tub experienced an overheat situation. This may be due to leaving the t stat turned all the way up and not monitoring or the hi-limit sensor is defective. The hi-limit sensor will shut down the heating cicuit if temp gets above 105 D optimally.the fact that the heater light is on is a good sign that things are working at this point.Whether or not a suitable temp(100-103 D) will be arrived at is to be seen. If spa heat kicks off before set temp is reached then replace hi-limit sensor.
SOURCE: savannah spas
probably a dirty filter!! take it out turn tub off to reset turn back on with filter out and c if nthis solves problem if so replace filter.
SOURCE: Intermittent jet problem on Spa form hot tub
Hmm, that's an odd one. It could be either a fault with the PCB or the pump.
The first thing to check is the voltage to the twin speed pump. If that's ok the motor is probably the cause of the fault.
As always, with anything electrical you need to be very careful with what you're doing and if you're unsure seek professional help.
Regards,
Ian.
http://hottub.synthasite.com
SOURCE: my hot tub control panel keeps showing OH and the
It sounds like your circulation pump is not keeping up with the heater. Check for debris in the pump impeller. If this is 24 hour circulation pump, it is probably failing. New units are about $200 US
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