Maintenance – Fulton Pulse DWH (PDWH) Domestic Water Heater User Manual
Page 39
Maintenance
Troubleshooting
This troubleshooting guide will assist in the diagnosis and correction of minor field problems. It should be used in conjunction with
the unit wiring diagram. In any case requiring additional assistance, the Fulton Service Department should be contacted.
Problem
Cause
Check
Starting or Purge Failure
Power Supply
Check fuse or circuit breaker. Reset or replace, as
necessary.
On/Off Switch
For all models check to see if on/off switch is illuminated.
Bad Air Switch
Try adjusting sensitivity of switch or replace.
Bad Fan
Check fan for operation. Replace if necessary.
Flame Rod (Option)
Check for carbon buildup, cracks in porcelin.
Main Control
Check for bad ground, or bad control.
Replace control.
Plugged Air Inlet
Check for blockage of air inlet line and remove.
Spark Plug
Check for carbon build up, moisture, cracks in
porcelain. Check for proper gap (.050" to .060"
for Champion sparkplug). Clean or replace as
necessary.
Loose Wire Connection
Check connections to all components.
Temperature Control
Check that the operating temperature control is set
higher than temperature of the water heater water.
Loose Tubing
Check to see if the copper tubing on the air valve
housing is securely connected.
Flame Failure
Power Supply
Check fuse or circuit breaker. Reset or replace
as necessary.
Main Control
Check for bad ground or bad control. Replace if
necessary.
Proof of Flame Switch
Check adjustment of pressure switch No. 2. It
should be set at 1.5" W.C. Replace if necessary.
Flame Rod (Option)
Check for carbon buildup, cracks in porcelin.
Loose Wire Connection
Check connections to all components.
Air Flappers
Check to see if the flappers on the air valve plate
are placed correctly (covering the holes).
Gas Flappers
Check to see if the flappers on the gas valve plate
are placed correctly (covering the holes).
Plugged Exhaust Line
Check for a blockage of the exhaust piping and
remove.
In All Cases:
Reset main control in panel box on flame failure.
Poor Combustion
Air Flappers
Check to see if the flappers on the air valve plate
are placed correctly (covering the holes).
Gas Flappers
Check to see if the flappers on the gas valve plate
are placed correctly (covering the holes).
Plugged Air Inlet
Check for blockage of air inlet line and remove.
36-PDWH