FULTON PulseHW Series Installation, Operation And Maintenance Manual page 78

5. Troubleshooting – Fault Code Diagnosis
Fault Code System Failure
Excess noise or device
Fault 02
running on slow AC.
"AC Frequen/Noise*
Fault 03 AC Line dropout
detected.
"AC Line Dropout*
Device running on fast
Fault 04
AC.
"AC Frequency*
Fault 05
Low AC line detected.
"Low Line Voltage*
Fault 15 Flame detected.
Main Flame Ignition
Fault 19
Failure
Combustion airflow
Fault 32
interlock fault.
*Airflow Switch*
The configuration
Fault 47
jumpers differ from the
*Jumpers Changed*
sample taken at startup.
Combustion pressure
Fault 54
switch fault.
*Comb. Pressure*
Purge fan switch is on
Fault 55
when it should be off.
*Purge Fan Sw. On*
Fault 56 Blocked intake fault
Recommended Troubleshooting
1. Check the relay module and display module connections.
2. Reset and sequence the 7800.
3. Check the 7800 power supply to assure that both frequency and
voltage meet specifications.
4. Check the backup power supply as appropriate.
1. Check the relay module and display module connections.
2. Reset and sequence the 7800.
3. Check the 7800 power supply to assure that both frequency and
voltage meet specifications.
4. Check the backup power supply as appropriate.
1. Check the relay module and display module connections.
2. Reset and sequence the 7800.
3. Check the 7800 power supply to assure that both frequency and
voltage meet specifications.
4. Check the backup power supply as appropriate.
1. Check the relay module and display module connections.
2. Reset and sequence the 7800.
3. Check the 7800 power supply to assure that both frequency and
voltage meet specifications.
4. Check the backup power supply as appropriate.
1. Verify correct jumper is clipped.
2. Reset control.
3. If fault persists replace 7865 flame programmer.
1. Check flame rod connections.
2. Check amplifier.
3. Reset control.
4. If fault persists replace 7865 flame programmer.
1. Check wiring--correct any errors.
2. Inspect the fan, assure that there is no blockage of the air intake
and that it is supplying air.
3. Assure that the Airflow Interlock switches are functioning
properly and that their contacts are free from contaminants.
4. Reset and sequence the 7800 to Prepurge. Measure the voltage
between terminal 7 and G (ground). 120 Vac should be present.
1. Inspect the jumper connections. Assure that clipped jumpers
have been completely removed.
2. Reset and sequence the 7800.
3. If fault persists, replace the relay module.
1. Check wiring; correct any errors.
2. Inspect the Combustion Pressure Switch to assure that it is
functioning properly.
3. Reset and sequence the 7865.During standby or prepurge,
measure the voltage between terminal 20 and G (ground). 120 Vac
should be present. If not, the combustion pressure switch may be
defective and need replacement.
4. If fault persists, replace the relay module.
1. Check wiring; correct any errors.
2. Inspect the Purge Fan Switch terminal 18 and connections.
Assure that the switch is functioning correctly and is not jumpered
or welded.
3. Reset and sequence the 7865.
4. If the fault persists, replace the relay module.
1. Check wiring; correct any errors.
2. Inspect the Block Intake Switch and make sure it is working
properly.
3. Reset and sequence the relay module.
4. During PREPURGE, measure the voltage between terminal 7
and G (ground). 120 Vac should be present. If not, the Block
Intake Switch is defective and should be replaced.
5. If fault persists, replace the relay module.
Fulton Heating Solutions, Inc. -- PHW Manual -- 2010-0713
Page 78