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Heater caution comes when switch is on, heater not workiworking

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Lasko 5610 red caution light, no power

In the bottom of th e 5610 there are 2 automatic reset breakers. In betwene the two there is wire connecting them together. In the middle of this wire is a thermal resister and thats what repaired mine. Replace it and your heater will heat again.

Posted on Mar 06, 2008

SOURCE: caution light comes on,rarely used heater. any thoughts?

Try calling 1-866-876-4332 ext 224 for tech help, it worked for me.  I only needed a temp
setting/off switch to fix mine.

Posted on Oct 23, 2008

  • 1 Answer

SOURCE: lasko heater model 5620

Underneath the heater element are two thermostats that are run in series with each other. Inside the wire that connects them is a thermal fuse that opened up. Replacing the fuse corrected the problem.

Posted on Nov 10, 2008

  • 2 Answers

SOURCE: Patton space Heater Model # prh-5

check that the rocker switch inside isn't stuck, when the rocker swings it shuts the unit off. if it is full of dust it may be stuck. may just be bad.

Posted on Dec 22, 2008

  • 4 Answers

SOURCE: yellow caution light

I also have the model 5620. with the yellow caution light on. After taking the unit completely apart I found 2 thermal fuses on the bottom of the unit(appox. size of a nickel). They are located under 'U" shaped brackets which are below the medal heating element. The thermal fuses do not reset. you could test them with a drip or two of souder or wire on the top - if you ran the heater this way it would be a safety problem as the fuse would be overridden. I am throwning mine away.

Posted on Jan 11, 2011

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How do I adjust the pressure switch on my hayward h250 heater


The purpose of the pressure switch is to verify the pool pump is operating properly and water pressure is present in the heating chamber. When water pressure is not present, the heater control system is designed to not allow initiation of flame. The pressure switch is preset at the factory for deck level installations. When the heater is located below the level of the spa or pool, the pressure switch may require an adjustment to compensate for the no-flow static head.

CAUTION: The Hayward Pool Heater is essentially a furnace. A trained technician should be consulted to repair it. DO NOT OPERATE the Hayward Pool Heater without a properly functioning and calibrated water pressure switch. The pressure switch adjustment requires both the pool pump and the heater be operational. As a result, extreme caution should be used during this procedure since sources of energy can not be isolated during the procedure.

The following procedure is recommended to calibrate the pressure switch.

1. The water pressure switch is located behind the front service panel. The pressure switch is typically on the left side, above the burners.
2. Be sure the water filter is clean before making the adjustment.
3. With the pump and heater system switch on, carefully turn the pressure switch adjustment dial clockwise, until a click is heard from the gas valve.
4. Turn the adjustment dial counterclockwise 1/4 turn.
5. Turn the pump off and on several times. The heater should shut off immediately when the pump is shut off. If the heater fails to shut down when the pump is off, repeat the steps above until the pressure switch is properly adjusted.
6. If the adjustment process fails to produce proper results the pressure switch should be replaced.

Jun 22, 2014 | Hayward H Series Pool & Spa Heater...

2 Answers

I need the lighted switch on front of Patton milkhouse space heater model puh680-u but can't track down web sight to order.


MILKHOUSE HEATER "CAUTION LIGHT" SOLUTION: Before I explain, let me clear this myth up: this is NOT an issue with the pendulum safety switch (some mistake that for a "mercury" switch). To begin, unplug the heater. Open it up and clean it out. I mean, buy a can of non-chlorinated brake cleaner and squirt all of the contacts good. Below the fan there is a sensor mounted on the heater element box on the bottom. That goes bad and causes it to trip. While you are there, squirt the motor bushings good with the brake cleaner and dab a drop of synthetic motor oil (just a drop) on EACH of the two motor bushings. Personally, I rewired this and bypassed all of the safety features. You can bypass that sensor without soldering or cutting any wires. All you have to do is unscrew the wires from the holder and then unscrew the tiny nuts and tiny bolts. Then bolt the together at one end (note the position) and put it back in the holder and tighten the screw to hold it in. This method fixes the issue completely as it removes the sensor from the equation. In fact, I just did that on my third milkhouse heater and it has been running solid for the last 15 minutes. Use your modified heater with caution! Let the brake cleaner dry before you energize this device!

May 22, 2010 | Patton PUH680-U Utility Heater

1 Answer

Low pressure flashes when i try to turn on the heater


check strainer and skimmer for excess debris that will cause low flow to heater thus not engaging pressure switch.make sure filter is clean.if all of these check out ,take continuity reading on pressure switch.if no continuity,try to adjust pressure switch if it wont adjust ,its faulty.take extreme caution when adjusting make htr will shut down when pump goes off

Jun 23, 2009 | Jandy Lx Pool & Spa Heater - Electronic...

2 Answers

Caution light comes on,rarely used heater. any thoughts?


Try calling 1-866-876-4332 ext 224 for tech help, it worked for me.  I only needed a temp
setting/off switch to fix mine.

Oct 21, 2008 | Pelonis WM-HO202C Oil Filled Radiator...

1 Answer

Red caution light


The red light is in conjunction with a safety. This is there in case something goes wrong, the heater doesn't overheat and possibly catch fire. If its not getting too hot, and its sounds like its not. The safety needs to be replaced. It will be a little disc shaped thing with 2 wires connected to it. If this heater also has a tip over safety, there also may be some type of mercury switch too. If you are so inclined, when you find the safety disc it should have some numbers on it. This indicates the temperature it is made to turn off at. After removing it, connect the 2 wires together and turn the unit on with a thermometer in the spot where the disc was. If the temp. doesn't go higher than the #'s on the disc after 45 seconds like you said, then you know positively that is the problem. If it gets hotter very fast, then the elements need to be looked at for defects. If there are no numbers on the disc or you cant find a replacement, then it may just be easier to buy a new heater.

Mar 03, 2008 | Patton MH761 Utility Heater

3 Answers

The Caution Light ?


MILKHOUSE HEATER "CAUTION LIGHT" SOLUTION: Before I explain, let me clear this myth up: this is NOT an issue with the pendulum safety switch (some mistake that for a "mercury" switch). To begin, unplug the heater. Open it up and clean it out. I mean, buy a can of non-chlorinated brake cleaner and squirt all of the contacts good. Below the fan there is a sensor mounted on the heater element box on the bottom. That goes bad and causes it to trip. While you are there, squirt the motor bushings good with the brake cleaner and dab a drop of synthetic motor oil (just a drop) on EACH of the two motor bushings. Personally, I rewired this and bypassed all of the safety features. You can bypass that sensor without soldering or cutting any wires. All you have to do is unscrew the wires from the holder and then unscrew the tiny nuts and tiny bolts. Then bolt the together at one end (note the position) and put it back in the holder and tighten the screw to hold it in. This method fixes the issue completely as it removes the sensor from the equation. In fact, I just did that on my third milkhouse heater and it has been running solid for the last 15 minutes. Use your modified heater with caution! Let the brake cleaner dry before you energize this device!

Nov 30, 2007 | Patton PUH9000-U Heater

1 Answer

Patton space Heater Model # prh-5


check that the rocker switch inside isn't stuck, when the rocker swings it shuts the unit off. if it is full of dust it may be stuck. may just be bad.

Nov 12, 2007 | Patton PUH680-U Utility Heater

2 Answers

CAUTION LIGHT only -- no Fan or Heat


According to the manual, the "Caution Light" means that the unit has overheated. They suggest running on a lesser setting, but you also may want to see if you can return the unit (if it is still under warranty).

Mar 31, 2007 | Black & Decker BDCH100 Ceramic Compact...

3 Answers

Lasko 5610 red caution light, no power


the caution light is telling you something is wrong. most wired baseboard heaters have a hi limit cutout that may be bad.  it is connected into the heater circuit as a safety device.  you could jump out this element to test this theory.  if the element is shorted, certainly it would blow a fuse or circuit breaker.  if the element is open it won't heat at all.  you need to take it apart and use a test meter to troubleshoot it.

Jan 02, 2007 | Lasko 5610 Baseboard Heater

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