Trane A801X026AM2SC Installation, Operation And Maintenance Manual page 54

T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g
DEFINITION
RECYCLE Lock Out = 10 recycles within a single
call for heat. Lockout period is for one hour.
Flame is sensed & then lost
All gas appliances in the home should be turned
on to verify gas pressure
Measure flame current. Is
flame current greater
than 0.75 micro-amp?
(0.75-3 µA = Normal)
NO
There are two flame sense pads located on the IFC,
marked "FP". To measure flame current, use a VOM set
to DC volts. Flame current will vary depending on the
type of meter used. Typical flame current ranges from
0.75 – 3.0 micro-amps (0.75 – 3.0 VDC)
DEFINITION
st
1 Stage Gas Valve not energized when it should
be 10 mes within the same call for heat .
24VAC not sensed on MVL 10 mes
54
2.2 Fault Code
Disconnect electrical
power to furnace.
Connect manometer
to manifold pressure
furnace and call for
Is manifold pressure
YES
Possible Causes
Dirty Sensor
Dirty burners
Poor grounding
Sensor loca on
Wire connec ons
2.3 Fault Code
Replace IFC
connector
NO
Cycle power to
st
1 stage heat
Adjust manifold gas pressure to
~3.5"WC (NG)
NO
~10.0" WC (LP)
YES
Possible Causes
Plugs
Blower door YES
Wind gust
Power interrupt
Possible Causes
Plugs
Blower door YES
Wind gust
Power interrupt
~3.5"WC (NG)
~10.0" WC (LP)
Check opera on
Is minimum outlet
gas manifold
pressure
maintained?
NO
Disconnect electrical
power to furnace.
Connect manometer to
inlet gas pressure
connector
Cycle power to
furnace and call for
st
1 stage heat
Is minimum inlet
gas manifold Correct incoming
NO
pressure gas supply pressure
maintained?
A801X-SVX001-1A-EN