Submittal Sheet

7800 SERIES S7800A2142 KEYBOARD DISPLAY MODULE
23 32-00110—05
Fault 41
*Main Valve On*
Main valve terminal was on
when it should be off.
WARNING
Explosion Hazard.
Can cause severe injury, death or property damage.
1. Remove system power, turn off fuel supply.
2. Check for wiring errors that could provide power to
terminals described by the fault. Correct any errors.
3. Re-power system; reset and sequence the relay module.
4. If fault persists, replace the relay module.
5. When fault is corrected, turn on fuel supply.
Fault 42
*Pilot Valve On*
Pilot (ignition) valve terminal
was on when it should be off.
Fault 43
*Ignition On*
Ignition terminal was on
when it should be off.
Fault 44
*Pilot Valve 2 On*
V2S valve terminal, used as a
pilot, is on when it should be
off.
Fault 45
*Low Fire Sw. Off*
Low Fire Interlock switch
failure to close or stay closed.
1. 1. Check wiring and correct any errors.
2. 2. Reset and sequence the relay module.
3. 3. Use either the manual motor position to drive the motor
to the Low Fire position, or use the Run/Test Switch option,
if available. Sequence to Run, drive to Low Fire and place in
the Test position. Adjust the Low Fire Switch while in this
state to make sure it is closing properly.
4. 4. While in Run, drive to Low Fire state, measure the voltage
between terminal 18 and L2(N). Line voltage should be
present. If not, the switch adjustment is incorrect and/or
the switch is defective and needs replacement.
5. 5. If steps 1 through 4 are correct and the fault still persists,
replace the relay module.
Fault 46
*Flame Amp Type*
Device specific. 1. Remove power to the device.
2. Reset the flame amplifier and reset and sequence the relay
module.
Fault 47
*Jumpers Changed*
The configuration jumpers
differ from the sample taken
at startup.
1. Inspect the jumper connections. Make sure that clipped
jumpers are completely removed.
2. Reset and sequence the relay module.
3. If fault persists, replace the relay module.
Fault 48
*Delayed MV On*
(2nd Stage Valve)
V2S valve terminal, used as a
delayed main valve, was on
when it should be off.
WARNING
Explosion Hazard.
Can cause severe injury, death or property damage.
1. Remove system power, turn off fuel supply.
2. Check wiring; correct any errors.
3. Inspect the V2S Fuel Valve and its connections. Make sure
the switch is working correctly and is not jumpered or
welded.
4. Reset and sequence the relay module.
5. If fault persists, replace the relay module.
Fault 49
*Man-Open Sw. On*
The manual open switch was
on when it should be off.
WARNING
Explosion Hazard.
Can cause severe injury, death or property damage.
1. Remove system power, turn off fuel supply.
2. Check wiring; correct any errors.
3. Inspect the Manual-Open Switch and its connections.
Make sure the switch is working correctly and is not
jumpered or welded.
4. Reset and sequence the relay module.
5. If fault persists, replace the relay module.
Fault 50
*Jumpers Wrong*
The sequence logic detected a
combination of jumpers that
is illegal for the sequence,
e.g., if it is correct to clip
jumper JR1 or Jumper JR2,
but not both, this fault would
be used when both are
clipped (Device specific).
1. Inspect the jumpers and refer to the installation instruc-
tions for compatible jumper configurations.
2. Make sure that clipped jumpers are completely removed.
3. Reset and sequence the relay module.
4. If fault persists, replace the relay module.
Table 5. Fault Message Summary. (Continued)
Fault Code System Failure Recommended Troubleshooting