115000 btu ready heater/ about 3 years old from home depot/multi fuel

After 19 years of service, your Reddy heater probably is ready for replacement.

That's the safety; it's supposed to do that to keep you from getting blown up!
Did you follow these instructions?:
http://www.ehow.com/how_10008271_reddy-heater-instructions.html
Does the power light come on?
Does the igniter heat up for 5 seconds?

Based on your description of the problem ............The part where you say "wont relight till it cools down" is a sign that the motor may be getting hot, the internal sensor in the motor is shutting things down for safety reasons. To find out run the heater til it shuts down then remove the cover. Feel the motor. It should be room temp or slightly warm. If hot- replace the motor with 102001-30.

Other possibilities would be a defective thermostat or temperature sensor. Eliminate these possibilities first.

Hi,

Here are a couple of tips that I wrote that tell you how to troubleshoot a Torpedo or Reddy heater...

Reddy Heater - Troubleshooting Torpedo Heaters

Torpedo Heater Pump Pressure Adjustment

heatman101


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Unfortunately it is the lack of use that has hurt this unit. Try using PB Blaster on the bearings and working the fan by hand until it loosens up. It will loosen up eventually, when it does give those bearings lubercation with a light oil. From running and shutting down and not using it for a while I would think that things got a little rusted up inside, this happens due to condensation forming on the warmed parts then it rusts. You can check the fuel pump but they usually are not an issue with the heaters.

The fuel pump is directly behind the fan motor as the fan motor runs both. The fuel filter is under the electrical control panel on the side of the heater usually has four to six 5/16 head sheet metal screws that hold it on. Remove the screws and then the cover comes off and this is where you will find the fuel filter.

Old fuel from last season? Start at draining/cleaning the tank. Add fresh fuel. Check fuel filter and air filters. Test again.

When checking functionallity of this heater heres what we need to look at.
Your pool is 6660 gallons with a 55,000 btu pool heater.
Right off the bat I can tell you that this heater is meant for a spa or small pool only.
Depending on where you are located this heater will not even keep up with heating this water in cold temperatures. You should have a 100,000-150,000btu heater installed for this pool.

Since this is what is installed, here it goes.
Make sure there is adequate flow to the heater. All heaters have a recommended flow rate which is more more productive than one that is too fast or too slow. Ideal for this heater is 55-65 gallons per minute, so make sure that the pump is not clogged and flowing freely.

Also, if this is an old heater and hasnt been serviced in quite a while, then the heat exchanger is probably overdue for a cleaning. When the heat exchanger gets dirty, all that heat produced by the burners just gets vented instead of heating the water. a yearly service is highly recommended on these low efficiency heaters.

By the way, you have a 55,000 btu heater that was 81% efficient the day it was installed.
This means that the actually heating btu's is already down to 50000.
the efficiency of these units will go down 2% a year if serviced, and about 3-5% a year if not serviced.

Long story short, the heater is undersized, and probably also needs to be cleaned.

It sounds to me that the motors on the units in question, may need a few drops of oil on the bearings. I have seen motors in these heaters and most do have a place to oil them, they wouldn't have sealed bearings as the newer motors.Check the blower wheels also for dirt build up on the blades, as this will cause them to be out of balance and cause some noise also.
Sincerely, shastalaker7

These heaters have built in thermostats. Sometimes they are adjustable sometimes they are not, check to see if your is adjustable and see if this fixes your problem. Also check to see if there is any air restrictions possibly causing the heater to over heat.