hi everyone. I have a Hayward h250 millivolt heater that I've been troubleshooting successfully for years .....this week ive been trying to get it to light and it's giving me a problem I've never experienced before. I light the pilot and the pilot stays lit but nothing's happening no clicking of the valve when I turn it on so I used a jumper wire to see if the gas valve will fire and the gas valve clicks once and then the pilot goes out. Now I know the jumping of the terminals on the gas valve is temporary.....I never leave them on ...only when I'm troubleshooting but if anyone can shed some light on why I'm having this problem or what the problem is I would really appreciate it thank you
Hayward H250 not firing
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Thanks for the quick reply. I'll check when I get home. One question though. Faulty thermocouple or not, wouldn't jumping the terminals on the valce cause the heater to fire?
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Sorry. ....valve, not valce.
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Sorry. ....valve, not valce.
ok gotcha thanks again. How long should the pilot normally take to charge the thermocouple to proper voltage?
Am I not waiting long enough perhaps?
Am I not waiting long enough perhaps?
I wasn't able to get any accurate reading so I removed the pilot generator altogether.
Is there any way to test to see if its any good from my workbench using a multimeter?
I checked resistance and compared it to an older PG I had replaced years ago and the
older one went down to zero ohms of resistance, but my current one registered 0.12 ohms.
Does that information tell you anything?
Is there any way to test to see if its any good from my workbench using a multimeter?
I checked resistance and compared it to an older PG I had replaced years ago and the
older one went down to zero ohms of resistance, but my current one registered 0.12 ohms.
Does that information tell you anything?
Why couldn't you get a reading?
You should get about 500 millivolts DC when the generator is heated in a flame.
Can your multimeter check millivolts DC?
You should get about 500 millivolts DC when the generator is heated in a flame.
Can your multimeter check millivolts DC?
Preferable to test the pilot generator while hooked to the pilot assembly. How does the flame at the pilot assembly look? It should be a nice blue flame and not a lazy looking flame.
I'll hook it back up tomorrow and report my findings. The pilot flame is nice and blue when lit.
Thanks
Thanks