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Thanks again ajw22. I disassembled the filter about one month ago and cleaned out all the baffles with a garden hose. So, I don't think that is the issue as the pressure has been fine. I think my next step will be to replace the bypass valve (plunger, spring, valve, etc.) since that is...

Thanks everyone for your suggestions. "1poolman1:" to address your question directly, I do not have a VSP. I will continue to troubleshoot and report back here with anything notable I may discover.

Thanks "1poolman1" and "ajw22." Well, I replaced both high limits this weekend and that clearly was not causing the problem as the heater cut out again when the spa temperature reached 95 degrees. However, I did have the time to do some extensive trouble shooting over and observed/heard...

Thanks AJW22. I will try those tips for troubleshooting and most likely replace both.

I have an old Hayward H300 natural gas heater. Despite being 21 years old (there is no digital display on the unit for example, that is how old it is), It still ignites faithfully every morning and heats up my pool to the mid 80s without an issue. However, when I switch to spa mode on my Jandy...

Thanks JamesW; will do that and repost.

Thanks for your reply JamesW. The heater is very old (~ 19 years) so it doesn't have a digital panel. Just two temperature knobs (one for pool, one for spa) that are both set to maximum. The model is an H300. And yes, the displayed water temperature, on the indoor Jandy control not the...

Thanks so much for your reply swamprat69. I believe that the flow volume is not the issue as the spa goes from approximately 82 degrees up to 95/96 degrees without an issue and then suddenly cuts out. I don't think that anything is suddenly impeding the flow volume when it gets to that higher...

Standard configuration on an in-ground pool with attached spa. The heater is about 19 years old, so owes me nothing. Still heats pool without issues, however when it is heating in spa mode it consistently cuts out every time at approximately 95 or 96 degrees. Then the heater will not re-fire...

Understood. Will definitely try your troubleshooting tip to confirm and then order and replace the new switches.

Thanks so much again. Is there any chance it could be a bad PCB? For example, does the PCB send a different voltage to the actuator depending on whether it wants the actuator to rotate one direction or the other?

ajw22 - thanks very much for your reply. Have you run into this problem before and know that it is caused by bad microswitches?

I have a pool with an attached spa setup in a standard configuration. When I turn on spa mode, the two JVA 2440 actuators typically rotate clockwise in sync to allow increased water flow into the spa returns and for this water to be drained by the spa drains. When I go back to pool mode, these...

Hi guys, I'm new to the forum but having the same problem as everyone else. Installed my Aqualink wireless in late May 2014 and withing about one week was having the same issue,, manifesting itself the same way as everyone else on the forum. the lights come on randomly, mostly overnight after...