Trouble shooting manual for Model# RGUJ-05EA-ER RHEEM GAS FURNACE
I need a Trouble shooting manual for Model# RGUJ-05EA-ER RHEEM electric ignition GAS FURNACE.
Igniter turns red hot but the Gas Valve just shakes and makes a clicking sound and then the ignitor will go out.
Furnace does not fire up and fan does not kick in.
Gas valve is Honeywell Part# VR8205A 2008 reg 3.5 ADJ 3-5 Range 24V 60HZ total current .5 A uses class 2 transformer.
I also do not see any type of control board with a digital read out flashing any error code. Please Help.
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The gas furnace is on the blink and you need to figure out
what is the reason why the heater isn’t heating. Grab your electric meter,
preferably a digital one, and we’ll check out some of the possibilities.
In your gas furnace find out where the power enters. Check
the voltage between the black and the white wires. Make sure that the black
wire is the hot and the white the neutral. Reversing these wires can make
We have power to the unit, so let’s check further. If you
turn the power on and the purge blower and the main blower both start to run
then you probably have a high limit reset tripped. Look for the limit switch or
switches to reset them. A little snap when you push the red button on the back
will let you know that you found the right one. If there are no reset buttons
then check for continuity across the terminals. If the switch is open then you
need to replace it.
If your purge blower only runs but nothing else happens then
you have one of two other problems. Either the igniter is bad or the pressure
switch may be bad or the flue blocked.
Check the pressure switch first by seeing if you get voltage
across the terminals of the switch. If the switch is closed like it should be
with the vent fan running then you will not get a voltage across the terminals,
this is good. Go on to check for the presence of power going to the igniter.
Many gas furnaces have an igniter that is very fragile and
cracks easily. A small crack will keep the little bugger from getting hot and
being able to light your furnace. Pull the plug apart going to the igniter and
check for power. You may have to recycle the power if you have had it on for
any amount of time. Often the furnace brain will time out the igniter try for
ignition and will not have power to it continually. Also the power will only
stay on for a few seconds when it does try, so you need to be ready and watch
If you are getting power to the igniter and it is not
heating up then you have a bad one. This often will only be visible by a fine
line of white dust on the surface of the igniter. This is the white line of
death for the igniter and indicates a crack in it. Purchase an igniter that is
compatible with your furnace or it may heat up too fast or not fast enough to
work with your model furnace.
Hopefully this gives a few more tips to help you trouble
shoot your gas furnace. As always, be very careful around and handling
electrical parts. I have been zapped a few more times than I care to remember!
Couple ideas here. First is make sure the thermostat is level. Most do not work unless they are level. Second, make sure there is enough fresh air. It make have a low oxygen sensor which keeps it from lighting.
It's not the GV. It's the Thermostat calling for heat when set to A/C and/or the Controller on the furnace.
The GV with a Hot Surface Igniter has nothing to do with the problem described as it only controls burner ignition when heat is called for.
Stay away from working on Gas Valves if you are not a licensed Technician or Tradesperson. Explosions can kill people and destroy property
Check along the gas supply line to the furnace and make sure there isn't a valve that is shut off. If you have a gas oven see if the ranges light and have gas. I'm assuming you've also turned on the gas supply at the furnace itself as well. Check that the furnace has electricity it won't be able to open the automatic valve let alone fire the igniter. My brand new furnace had a safety switch that went out 3 days after installation preventing it from lighting. You might contact Arcoaire about that. http://www.arcoaire.com/
do you have a standing pilot or electronic ignition furnace........you could have a problem with a safety switch, bad electrical connections, electrical short, circuit board issue, hot surface igniter issue....etc...........need to know the type of furnace
check to see if the hot surface igniter is coming on or if direct spark see if it is sparking to light if this is working then you are not getting gas from your gas valve. The board should be giving you code by blinking light. If you will count the blinks there should be a chart on the door to tell you what it means. HOPE THIS HELPS