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some Lennox units have a small black rocker switch on the metal panel to the right of the circuit board. Have you checked this small rocker switch to reset?
what is your model number?
that is an ac coil on the furnace. Can you remove both doors of furnace...take pic...and post?
ok I understand now...
The power to the unit...have you checked it with a meter? Is it 230 volt?
if you press the center bar of contactor in does unit do anything?
a pencil, screwdriver stick....we want to just press the spring loaded center of the contactor down
thank you...so we are missing the signal from inside...does the indoor blower turn on inside the house?
no....inside the house is a blower unit...if you set the thermostat to fan on...does the indoor blower run in the house?
that is where we need to start,,,it is the signal that starts at blower unit..goes to thermostat and then to outdoor unit. Do you know where your indoor blower is?
can you see if the breaker is on to the indoor unit? Also I see you have a zoned system so you have more than one thermostat?
the issue is inside this unit.
This is 220v also...do you have a meter to test this unit?
ok...set volts~ 750....then we need to test main power to this appliance..hot wire to hot wire...not hot wire to ground
put the meter leads on the 2 terminals where the 2 black wires are on right side.
now the left side where it leaves
ok, to the left of what you just tested is a transformer..brass color cube.
This takes 243 in one side and supposed to have 24v the other side.
Can you test this?
the opposite side...what are terminals? we will just test output..
excellent...one meter lead on blue wire terminal and the other meter lead on the brown wire terminal.
just by putting meter leads on?
the side we are testing is only 24 v..the breaker is 240v.
reset the breaker...then carefully test the 2 terminals again...the only thing that could trip breaker is if a bare wire touched ground
this means we have main power and we have control power. But the zone panel is not closing signal for the equipment.....you still game to go into the zone panel up at top marked Honeywell?
remove cover...on left side towards bottom is a block with R and C.
we need to test those 2 terminals...meter lead on each
now above that is Equipment module..put meter red lead on RC/RH and the meter black lead down on the C tested previously
ok, we have narrowed this down alot and are ready for the final tests...do you have or can make a strip of wire 4-5" long with the ends stripped?
excellent....the Equipment block...one end of wire on Rc/Rh (either one) and the other end of wire touching G...tell me if blower kicks on
ok we have the 2 end points with issue in between...follow the wire from the Equipment block Rc/rh....where does it go or end?
that switch in pan is likely breech. wire from rc/rh runs to this switch..then from switch does it go to transformer? almost there...
ok, we have a bad wet switch...or a bad time delay relay (black box).
cut the wet switch wires and wire nut together or twist and tape.
then jump rc/rh to g again at equipment block.......This is last test
yes...basically we just want to pretend that switch was never there...
that was it....go ahead and press next.
You have a bad wet switch...is anything starting to kick on yet?
It would not hurt at all as you never know when compromised.
So we know:
Outdoor unit has power
Indoor unit has main power
Indoor unit transformer works with 24v
Zone board gets 24v from remote transformer
Everything is in place except for the wet switch is bad and you have a purge delay.
Now at thermostats..turn all off but turn fan switch to on.
and rc to G on equipment block did not work either?
I am very sorry but I have to go offline. Is it possible to continue tomorrow or would you like me to transfer to an online tech?
anytime you respond I will be notified. I am scheduled for 10-12 and 5-10
I am sorry, whether it is sickness or deer hunting I was short techs today. I do not know quite yet when I can get back on so I will release the question so that anyone can assist.