Question about Comfort Zone CZ1500WC Infra-Red Utility/Portable Heater

2 Answers

I have a Comfort Zone CZ1500W showing an AO5 error code. I have 9 ohms across each element. The fan thermostat reads open. When I bypass it the fan runs, but no heat. The element thermostat reads

I disconnected the 3 wires on the right side of the circuit board, labeled com, heat1, and heat2. I still get an A05 error as soon as the temp setting reaches room temp. Do I have a bad circuit board?

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  • Bill Woodard Dec 09, 2011

    For those like me who didn't know, Comfort Zone filed chapter 7 bankruptcy. There is limited support. I managed to get a hold of a former distributor. They provided me with troubleshooting manual. My initial assumption was correct. Bad PCB.

  • Bill Woodard Dec 11, 2011

    Mine had a sticker from the local distributor on the back. If yours doesn't, call 866-446-2846. They sent me (via email) a troubleshooting manual. They have limited support in terms of parts. And they are very busy. Expect to leave a voice mail and wait 2 or 3 days for a call back.

  • Lee Kreuzer Dec 26, 2011

    The control board is OK, A few components need to be replaced. The company will supply you with a new board for over $100, but this is not necessary. I've been repairing these units that flash the A05 code or slightly flash something on the display. My repair and testing only costs $75 for out of area repairs. $50 for dropped of units in the Western New York area. Contact me at leekreuzer@yahoo.com with any questions

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Everytime I turn on the CZ heater, the display reads A05 and then it goes away when i set the temp. As far as I can see and feel, I'm not experiencing any issues with the heating, fan, or thermostat or the extension cord running hot. I'm concerned that something could be wrong or unsafe, with Comfort Zone filing for Chapter 7, anyone know who is offering support or a number I can contact?

Posted on Dec 11, 2011

  • Lee Kreuzer Dec 26, 2011

    That is normal. The A05 code should be present until all power supply capacitors are charged to normal operating voltage.

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Sounds like you are in need of a new pcb

Posted on Dec 02, 2011

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jim_james_43.jpg

OR it could be a thermostat.
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or lastly, it might be
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IF you do not have an OHM-METER, then you can check these issues by following the directions below:

To check the thermal fuse - You can bypass the thermal fuse (just connect the 2 wires together) for testing purposes only.

To check the thermal cut-out - You can bypass the thermal cut-out (just connect the 2 wires together) for testing purposes only.


To check the thermostats for continuity - - You can bypass the thermostat (just connect the 2 wires together) for testing purposes only.

To check the Element: Try removing element and physically looking at the element wire for a break in the wire.


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Hello there here is a list of things to check
Testing with an ohm meter checking on a dryer....
These are the places that pass voltage to the heater elements on an electric dryer. In order to check a dryer for no heat, here is a list of places to check. Remember to always unplug the appliance before starting testing with an ohm meter. Always remove wires from the part you are testing with an ohm meter ( write down what goes where first before removing any wires ).
Meter testing and usage tips.
1. Power supply-check power supply at terminal block where cord enters the dryer. Should read 240V. If you read 240V here, tested with a volt meter, unplug dryer and test components with ohm meter.
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7. Heat elements-Test heater element with an ohm meter. You will read continuity across a good element ( 8-12 ohms is an average element ).
But darn it, I don't have a Ohm Meter....
To check the thermal fuse - You can bypass the thermal fuse (just connect the 2 wires together) for testing purposes only. To check the thermal cut-out - You can bypass the thermal cut-out (just connect the 2 wires together) for testing purposes only.
To check the thermostats for continuity - - You can bypass the thermostat (just connect the 2 wires together) for testing purposes only.
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How to take apart information for GE style dryers
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2. Thermostats-Cycle and safety thermostats-read them with an ohm meter. Should show continuity . How common thermostats work.
3.Timer-The timer has a set of contacts that pass voltage to the heaters. If you can not determine by wiring picture what they are, check across the two terminals with the largest wires on them. The heater wires are almost twice as large as the others. You should read continuity with timer in heat mode.
4. Thermal fuses-In recent years the makers of dryers are using thermal fuses to let you know something is wrong with your dryer. They are generally non resetting and have to be replaced. The thermal fuses are located on the heater element housing and should read continuity if read with an ohm meter. Most blown thermal fuses are the result of vent/air flow problems or a grounded heating element.
5. Selector Switches-Read the wiring picture and determine which switch is closed. You should read continuity across closed switches.
6. Safety Switch on Motor-There is a safety switch on motor to insure that heaters can not come on unless motor is running. It is normally open when the motor is idle/not running, and closes when motor runs. In order to check with an ohm meter, remove the two large wires on motor switch and make them electrically safe. Tape them. Plug the dryer in and start motor. Check continuity across the terminals on the motor switch you removed the heavy wires from. If it is ok you should read continuity. Remember that the smaller wires in a dryer carry the 120V and the large wires carry 240V. There is no voltage on these two terminals with wires removed. It is ok to test with ohm meter.
7. Heat elements-Test heater element with an ohm meter. You will read continuityacross a good element ( 8-12 ohms is an average element ).
But darn it, I don't have a Ohm Meter....
To check the thermal fuse  - You can bypass the thermal fuse (just connect the 2 wires together) for testing purposes only.To check the thermal cut-out  - You can bypass the thermal cut-out (just connect the 2 wires together) for testing purposes only.
To check the thermostats for continuity -  - You can bypass the thermostat (just connect the 2 wires together) for testing purposes only.
To check the Element: Try removing element and physically looking at the element wire for a break in the wire.

How to take apart information for GE style dryers
How to take apart information for Inglis - Whirlpool - Kenmore dryers
How to take apart information for Maytag dryers
How to take apart information for Frigidaire and White Westinghouse
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4 Answers

Comfort zone infrared heater


Hello all , just push and hold the two buttons on the right for 3 seconds and it will reset. Joe

Oct 03, 2008 | Comfort Zone Heating & Cooling

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