Question about Sta Rite STA-RITE AIR BLOWER KIT - 77707-0253

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Pentair Master Temp blower #77707-0253. Starts and heats up fine, then when heat is called for, the blower moter will not start and has a loud buzz. Works perfect on the initial start, why won't

Spa heats up to the preset 100 degrees, then won't fire up again. Just a loud buzz on the motor.

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Most likely the blower is bad, it will only get to 100 because it is then overheating internally and trying to protect itself so it turns off.

Posted on Oct 03, 2017

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Bad blower motor

Posted on Oct 01, 2017

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Dryer starts and runs fine but makes a loud buzzing noise from the motor that sounds a lot like the end of cycle signal


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1 Answer

What caused a loud, low frequency noise upon ignition.


Water in the heating chamber will cause your heater to make these sounds. If your water is cold, it will create condensation inside of the heating chamber. Another way water would get into the heating chamber is if your heat exchangers are leaking. Id check to make sure that heating chamber is not full of water, if theres any real accumulation of water, 2" or more, inside that chamber, the exchanger needs replacing. Otherwise, it sounds like condensation.

Feb 23, 2015 | Pentair MASTER TEMP HEATER 400 000 BTU NG...

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Why would water come out of the air blower on my pentair master temp 400


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Pentair master temp 400 not turning fan on. resets and then flashes r-8. AFS led keeps coming on replaced blower still same problem?


so the problem is air vac switch need to closed before the fan star running is 24vac power them we need to move to ignition control muddle (IID) CHECK f-1 and f-2 for 120vac going to fan , make sure the heater is calling for heat , good look and take you time,

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My mastertemp 400 has a problem. Flow on spa is fine until it ignites. As soon as it ignites it starts to make a grinding noise in the inlet box area and the return lines start jumping like air is in the...


Either your heat exchanger is clogged, or there is a hole in it. When you get a hole in the exchanger, the air that is created due to evaporation upon start up, pressurises the exchanger and starts it jumping around.
If you do not notice any water leaking inside the heater, just remove the cleanout plugs and flush it out real good. Maybe you can just get away with a good cleaning.

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Pentair MasterTemp 400 Heater Will run fine for about 1-2 hours then the service heater light comes on and the control panel is completely locked up. I can only reset by cutting power to the machine, where...


This reminds me of some of the High temp sensors ive replaced. I would start with checking the pumps flow to the heater. Make sure there are no abstructions and at least 35 GPM (gallons per minute) running to the heater. If your flow is too low, you will trip the high limit sensor after a short while.
This could also mean you need to clean out the heat exchanger. When an exchanger gets dirty, it blocks the flow of water, slowing it down and "super heating" itdue to the water being in contact with the exchanger for too long. This will also trip the high limit and call for service.
If both the above items check out, contact me @ adamh@newconceptchem.com and I will guide you further.

Nov 23, 2010 | Pentair MASTER TEMP HEATER 400 000 BTU NG...

1 Answer

Brand spankin' new Master temp 400 NG,won't heat past 77° spa is set at 101°,pool at 88°, does heater pool/spa temps have to be manually set to max(104 i assume) for intellie touch to...


if the intellitouch is properly wired to the heater, it should all be automatic and you should be able to control it all from the remote.

there should be three wires connected to the circuit board behind the manual control on the heater (labeled "POOL", "SPA", "Common"). Those are the wires that the intellitouch uses to communicate with the heater.

You can download manuals from the Pentair website.

www.pentairpool.com

Aug 24, 2010 | Pentair MASTER TEMP HEATER 400 000 BTU NG...

1 Answer

HEAT PUMP


It is not normal to have a loud buzz associated with the electric heat. Try turning the heat off and running the fan only to see if the buzz continues. The buzz could be coming from any number of sources including an electrical component, the blower wheel, a loose fastener...etc.
The temporary smoke and smell could have been the dust burning off the element if the elements have not been used in a long time. However, if the elements have been running, it could be something got loose in your system and stuck between the blower and the heating elements.....for example, the wiring diagram could have come loose and worked it's way through the wheel. I've also seen owner's manuals left in the air handler that eventually got stuck in the blower. This should be inspected to ensure there is not a fire hazard.

I hope this helps and good luck. :-)

Feb 24, 2010 | Friedrich Heating & Cooling

1 Answer

Pump problems?


Their can be a number of things.. Is the pump priming. Hopefully it did prime. what usually happens after running for awhile, with no cool water coming in. The water inside the pump basket starts to heat up, then the tubing turns to brownish on the input side of pump and exhaust side. (you could have air leaking in throught the input side, which could result in the pump never priming) Or if it is priming and no pressure (can mean your empellar is clogged up)

Mar 07, 2009 | Pentair Mastertemp Heater

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