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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 5648
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Lennox cx34-31b-6f-1 main ek electrical board buzzing no

Customer Question

lennox cx34-31b-6f-1 main ek electrical board buzzing no heat
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: filters were clogged, will try again without filter.
JA: Do you plan on doing the work yourself?
Customer: yes i would like to do it myself
JA: Anything else we should know to help you best?
Customer: not just yet, ill let you know
Submitted: 15 days ago.
Category: HVAC
Customer: replied 15 days ago.
filters removed, main fan turns on, combustion fan turns on, ignitor does not glow but has 34 ohms of resistance. what should I check next?
Expert:  Gaztech replied 15 days ago.
Welcome to Just Answer, my name is Luke NOTE: I can only get credited for assisting you if you click the 5 star rating at the top of page when we are done

Are you ready?
Customer: replied 15 days ago.
I'm ready.
Customer: replied 15 days ago.
I updated the question to state the filters are removed, the main fan turns on, the combustion fan turns on, but the igniter does not glow however it has 34 ohms of resistance. What should I check next.
Expert:  Gaztech replied 15 days ago.

The model number you provided is not for the furnace, it is for a air conditioning coil,

try again, it will be in the furnace

Expert:  Gaztech replied 15 days ago.

Check the flash code it bottom compartment look through the sight glass, count the amount of flash between pauses.

Customer: replied 15 days ago.
G61MPV-36B-045-10
Customer: replied 15 days ago.
The STATUS LED flashes only once and then a long pause before flashing once again... SPEED is on constant green. CFM is intermittently on an off. E-COM flashes rapidly now ane then.
Expert:  Gaztech replied 15 days ago.

Here is the service manual, refer to page 90 and identify witch flash code you have

http://www.hvacpartsshop.com/manuals/G61MPV_Series.pdf

Customer: replied 15 days ago.
The board in the manual is not the board I have. While it says SureLight on the board it also says Honneywell and the connectors and LEDs are arranged differently.
Customer: replied 15 days ago.
I found my control board on page 5.
Expert:  Gaztech replied 15 days ago.

OK, stand by

Expert:  Gaztech replied 15 days ago.

I will let another tech help you

Customer: replied 15 days ago.
The red indicator LED labeled STATUS pulses once every 5 seconds. It does not give any X + Y code.

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