Question about Coleman 7990-319p Evcon Gas Furnace Control Board

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Indicator blicks 3 times replaced combustion air switch but did not resolve problem. what do i do now?

Indicator light flashes 3 times replaced combustion air switch did not solve problem. what can it be

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There should be a diagnostic code that will tell you what 3 blinks mean for that model. look on door inside cover. tell me EXACTLY what it does at start up. small draft motor comes on? you see a glow from hot surface ignighter? gas comes on? flame on? it should run in this order.

Posted on Feb 21, 2014

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1 Answer

Ignition control led 3 flashes


First, make sure that combustion fan comes on and there is nothing obstructing air flow in the combustion chamber. Then, check the tube between the pressure switch and the induction motor to make sure it is connected and not obstructed. Then, replace the pressure switch, part number 60030.

Mar 02, 2014 | Mr. Heater MHU45LP

1 Answer

Indicator blicks 3 times replaced combustion air switch but did not resolve problem. what do i do now?


There should be a diagnostic chart on the furnace door by the wiring schematic. If so see what the code reads for three blinks.
By the term "air combustion switch" I guess you are referring to the pressure switch. Most diagnostics blinking three times is just a dirty flame sensor. If this is the case the burners will light and go out within 4 seconds. If this is the problem carefully remove the flame sensor and clean gently with emery cloth, fine sandpaper or fine steel wool. Reinsert the sensor and enjoy your heat.

Feb 14, 2014 | Coleman 7990-319p Evcon Gas Furnace...

1 Answer

Furnace wont work


Have to know the model and serial of the furnace.
locate code list usually inside or on the back of a door.
Operation sequence= call for heat--inducer blower motor--makes pressure switch--signals board to bring on hsi--after a set time gas valve opens and you have ignition--main blower motor comes on after a set time

Feb 14, 2014 | Coleman 7990-319p Evcon Gas Furnace...

1 Answer

Furnace light blinks 3 times


3 FLASHES... PAGE 21 (below)

Pressure switch problem:

1. Obstructions or restrictions
in appliance air intake or flue
outlet are preventing proper
combustion airflow.
2. Moisture or debris in tubing that
connects pressure switch and
draft inducer.
3. Airflow switch jumpered or
mis-wired.


http://homeappliance.manualsonline.com/manuals/mfg/sterling_1/tf250.html

Oct 21, 2013 | Sterling RF45 Propane Gas Heater (45,000...

1 Answer

I have installed ac of whirlpool. after 2 month the indicater of filter started blicking, i called the respected people and made it clean. until the indicater is continuously blicking. the sales person...


If the filter was removed and replaced while the unit was ON, it doesn't sense that it was replaced or cleaned. Turn the Master ON/OFF Switch to OFF, unlpug it from the wall, remove the filter and reinstall it properly. Then, plug the cord back in and turn the Master ON/OFF Switch to ON. The Clean Filter indicator light, should have stopped blinking or will shortly there after.

Hope this helped you.

Jun 20, 2011 | Whirlpool ACC108PS Air Conditioner

1 Answer

Red light flashes 3 X indicating a open pressure switch how can I find the part number


Verify that there is an adequate amount of vacumme on the switch first. using a manometer measure the negative pressure at the inducer port. A good rule of thumb is to be at least .2" of wc above the listing on the switch. If adequate negative pressure exists then replace the switch. If not then check the flu and make sure the furnace has enough combustion air provided to it.

Dec 03, 2010 | Goodman GMS90703BXA Heater

1 Answer

I have a constantly blinking red light above the lower setting arrow...how do i resolve the problem???


1. Plug unit into outlet. 2. Press power ON/OFF switch to the ON position. 3. Allow unit to start running at low speed. 4. PRESS and HOLD both the UP and DOWN arrow buttons until the FILTER REPLACEMENT INDICATOR starts to blink. 5. Release both the UP and DOWN arrow buttons. 6. While the FILTER REPLACEMENT INDICATOR is still flashing, again PRESS and HOLD both the UP and DOWN arrow buttons untile the FILTER REPLACEMENT INDICATOR turns off.
If the steps above have been performed properly, the Filter Replacement Indicator will turn offand not flash again for 11 months. If the Filter Replacement Indicator remains on, repeat the steps again.
*Note that in step 6 above, the Filter Replacement Indicator MUST still be flashing when the buttons are pressed the second time.The Filter Replacement Indicator will continue to flash for approximately 3 seconds after the buttons are released as required in step 5 above.

Nov 19, 2010 | Filter Queen Defender Air Purifier

1 Answer

Sometimes the hot water just goes cold


Here are a couple things to look for:

1) flashing burner light - a flashing burner light indicates the unit is getting an error code
common error codes:
A. continuous flashing - ignition failure or abnormal combustion; look for visible water in the machine indicating a leak, check gas pressure, debris or buildup on flame rod/igniter plug, or clean unit with compressed air
B. 3 flashes - error 16, abnormal outlet water temperature; typically this code indicates you'll need to descale you unit
C. 4 or 5 flashes - exotic error codes; you should contact Noritz technical support to deal with these codes

2. If there is no flashing code, try increasing the hot water flow. In the summer time you typically use less hot water; this can result in intermittent operation of your tankless heater. Increase water flow by either: A. cleaning your showerhead and removing scale deposits B. widening your flow restrictor C. Remove your flow restrictor in the showerhead

3.If none of these resolves your problem, you probably have debris in your flow sensor. Contact Noritz technical support for a walkthrough on removing debris from a flow sensor.

Feb 18, 2010 | Noritz 6.3 Gallon Residential Tankless...

3 Answers

My Colman forced air heater is cycling acording to the thrmastat but wont heat up. The trouble shooting light flashes three times.What part do you think is failing?


3 flashes is the combustion pressure switch . Mounted on the front mid high. Two silicone hoses run to it along with blue two wires. By now you have probaly got this fixed though.

Nov 16, 2009 | Coleman Propane Forced Air Heater...

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