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I am installing a used ruud deluxe 90 plus. It has been

Customer Question
Hello I am...

Hello I am installing a used ruud deluxe 90 plus. It has been converted to propane. I hooked up the gas line installed a new thermostat and followed the lighting procedures but it will not fire up I can see the electronic ignition glow but that's it

Contractor's Assistant: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?

I think the gas valve isn't allowing gas flow

Contractor's Assistant: Do you plan on doing the work yourself?

Yes

Contractor's Assistant: Anything else we should know to help you best?

I have checked the intake and exhaust pipes for blockage and found nothing

Submitted: 10 months ago.Category: HVAC
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Answered in 2 hours by:
10/4/2017
HVAC Technician: airheatman, HVAC Technician replied 10 months ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,378
Experience: Furnace, A/C and heat pump specialist.
Verified

Are you getting an error code on board? Such as 3 blinks pause? What is furnace model?

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Customer reply replied 10 months ago
ruud deluxe 90 plus their is no board
Customer reply replied 10 months ago
what would cause no gas flow from the gas valve?
HVAC Technician: airheatman, HVAC Technician replied 10 months ago

Most all electronic furnaces have a board.The board is what signals vent motor to come on,igniter to light ,gas valve to energize etc,

If igniter is lighting,the gas valve should open.Do you hear valve click.

Can you give me complete model from inside furnace in burner compartment so I can provide guidance with this specific unit.Model will be on a label just above burners on right or left inside panel

http://i.imgur.com/U8b0GXT.jpg

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Customer reply replied 10 months ago
model #ugeb-10ee-gs the electronic ignition glows but its like the gas valve isn't opening
Customer reply replied 10 months ago
I hear a click when the igniter shuts off that's it
HVAC Technician: airheatman, HVAC Technician replied 10 months ago

OK if you hear the valve click but no gas the issue is either improper inlet pressure or gas valve is bad

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HVAC Technician: airheatman, HVAC Technician replied 10 months ago

These boards do not have the error lights, but tell he gas valve when to open. If you are hearing the valve click the board is doing its job

Check iinlet pressure and if it is good, replace the valve

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Customer reply replied 10 months ago
I’m not getting a click at the valve. The only click I get is at the board when the igniter shuts off
HVAC Technician: airheatman, HVAC Technician replied 10 months ago

OK Check at valve and see if board is sending 24v to valve

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Customer reply replied 10 months ago
set my multi meter to ac volts and touch the probes to the wires going into the valve? should I see 24 v when the igniter lights up? also does it matter witch lead goes to either wire?
HVAC Technician: airheatman, HVAC Technician replied 10 months ago

Doesn't matter which lead.We should get 24v when igniter lights

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Customer reply replied 10 months ago
I got nothing
HVAC Technician: airheatman, HVAC Technician replied 10 months ago

Do you have the Honeywell or Robertshaw?

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Customer reply replied 10 months ago
Robertshaw
Customer reply replied 10 months ago
Tried again got a .01 on the valve then went to the board and tested valve and ground and blipped a .03.
HVAC Technician: airheatman, HVAC Technician replied 10 months ago

If meter is set to AC volts and we are not getting 24v the board is bad.

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Customer reply replied 10 months ago
Installed new board and now the gas valve clicks but still not firing up????
HVAC Technician: airheatman, HVAC Technician replied 10 months ago

Are we getting 24v to valve now? If so we need to check inlet gas pressure

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