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Sensor shows 3 flashes

Post created: 2012-11-14 Type of Equipment: Furnace Views: 296

This question was created on the page: https://www.furnacecompare.com/furnaces/york/diamond-90.html.

On 2012-11-14 JB wrote:


First, if you are getting an error code you need to call an HVAC tech to properly diagnose the problem. The following are general fault codes for York furnaces however your model may vary.

Slow Green: Normal Operation

Slow Amber: Normal Operation With Call For Heat

Steady on Red: Control Failure

Rapid Amber: Low Flame sense currant

1 Red: Flame present with gas off

2 Red: Pressure Switch stuck closed

3 Red: Pressure switch stuck open

4 Red: Limit switch open

5 Red: Rollout switch open

6 Red: Pressure switch cycle lockout

7 Red: Ignition lockout due to retries

8 Red: Ignition lockout due to recycles

9 Red: Grounding or line polarity fault

10 Red: Gas flow with no call for heat

11 Red: Limit switch open –blower failure

4 Amber: Y present with no g call

To keep legal happy, let me just say that I am not an HVAC contractor, and you should never even look at your furnace without having a qualified, liability accepting HVAC contractor present. To keep sales happy, let me just say that you can find an HVAC contractor that's happy to take your money here: http://www.furnacecompare.com/perl/find_contractors.pl

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