Question about Patton MH761 Utility Heater
The red caution light comes on after approx 45 seconds....heater will shut down, then come back on after approx 1 minute....it just started doing this for no apparent reason...heater is approx 3 yr.s old but has very little running time (use) on it.
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.
Posted on Mar 05, 2008
Tips for a great answer:
Feb 14, 2013 | Comfort Zone CZ1500WC Infra-Red...
Nov 25, 2012 | Mr. Heater Heaters
Sep 23, 2011 | Black & Decker BDCH100 Ceramic Compact...
Ok so here is a sequence of the heater lighting and the solution for your problem...
1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution:You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks.Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. Please see "limits, rollout switches & furnace control boards" further down on this page. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning. Please see the pictures below to help you identify a flame sensor.
Thanks and I hope this helps. Feedback apprec.
Jan 28, 2011 | Honeywell Electronic Programmable...
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
Dec 14, 2010 | Heaters
Aug 14, 2010 | Vulcan AUW230A Heater
Jan 10, 2010 | Dayton Gas Furnace Heater
Oct 11, 2009 | Lasko Oscillating Ceramic Heater w/Remote
239 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: