Check rollout switches for reset. vef unit went out on limit . It is a fuse link or limit. Do you have and ohm meter. Russ
I do have an ohm meter with buzzer, x1K, x10 and x1. What should I check?
The fusable links f
The fusable links first. Just remove wires and ohm across. Do same to rollout switch. Check blower compartment. There is a limit switch there also. Russ
Hmmm... seems to be good ohms accross all switches and fuses???
However, for the first time, for whatever reason, the furnace began to initiate the whole startup process and the error code went away for about 20 seconds. then it returned to the initial state with 33 and just blower motor.
Check limit above burners. Jump two wires together and check operation. Do not leave it this way. Russ
Tried - no go.
Jumper across all rollout switches and try. They will get alittle corroded sometimes. Russ
still no go.
I have to leave so I will opt and turn you over to great expert. Russ
thx for your help.
What about the pressure switch? Or maybe the thermostat controls... or... 24V transformer???
I'm grasping at straws.
Doublecheck fault diagnostic code and let me know what chart says. Russ
Code 33: LIMIT OR FLAME ROLL-OUT SWITCH IS OPEN - If open longer than three minutes, codechanges to #13. Check for:- Defective blower motor or start capacitor. - Dirty filter or restricted duct system.- Loose blower wheel. - Defective switch or connections.- Inadequate Combustion air supply Flame Roll-out Switch or fuse link.- Open Flame Roll-out switch,or fuse link. Manual reset or replace.
Ok when you get there set the stat to call for heat. Go to the furnace turn the switch off for few seconds then back on. Note exactly what happens.
Does the draft inducer start?
Does the ingnitor glow?
Does the main burner come on?
Does the blower start?
will do - thanks....
Just be sure that the switch is bad and not opne because the flame DID/ IS rolling out
same thing be sure the unit is not overheating for some reason