Heater runs but does not heat the pool....started when pool was at 82 Deg and ran for a few hours and noticed the pool was then 77...it's cooling the pool vs. heating. I do not see any condensation either. No other indicators are showing on the control panel. I am assuming the compressor did not come on and that's why there is no condensation ? Thermostat bad ???

SOURCE: hayward pool heater h series

the issue is a broken baffle in the system. there is a baffel that directs water into the heat exchanger and back out into the system. The welds that hold the baffel in place have broken off. It can be repaired if you take the unit to someone with a mig welder and have them re-weld it (muffler shop, mechanic?). there needs to be a weld on both sides. You can see the baffel if you remove the unit and look down the inlet and outlet tubes.

SOURCE: 1 year old hayward h1001d pool heater clicking

see this link ....

http://www.fixya.com/support/t1078177-hayward_pool_heater_h_series

SOURCE: h100id induced pool heater runs for 4 minutes then stops heating

I just solved this about an hour ago. It's the connection from the circuit board to the ignitor. The same thing happened to me that it ran a long time and then it wouldn't. At some point it loses spark. The large wire from the board to thee= ignitor is the culprit. Take the ignitor out and press the two electrodes to about 1/4"-3/8max. Clean the surface plate where it meets the heater and also clean the brass piece on the othe end. Then clean the brass piece on the circuit board. Slide the 2 boots down a little and expose the receptacles. Press them a little with pliers, put them on their respective connections and then slide the boots back on. It started right up and has been running since! This after I bought a new gas valve $178! Let me know if this does it for you.

SOURCE: Our H Series pool heater is igniting but is not

This could be a bad thermostat or temp sensor, or it could be a water flow problem. Ether the by-pass in the heater or on the outside pipes. It could just be the filter is dirty expecally if it is a DE filter. These should be taken apart and cleaned at least once a year. I hope this helps.

thepool

• 78 Answers
• Posted on Apr 22, 2010

SOURCE: Hayward HeatPro Heat Pump for pool won't turn on

Power to the unit but not the display + mice = bad board probably. Service call required...