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AEROTECH HERMAN NELSON INTERNATIONAL INC.
100 Eagle Drive, Winnipeg, Manitoba Canada R2R 1V5
Phone: 204-633-1999 (24 Hours) Fax: 204-694-1612 Email:
Check Out Our Web site
www.hermannelson.com
New Items Added Weekly
12.18.07 REVISION 1.02
Section 5
• Troubleshooting
• • • • • • • • • • • • • • • •
5.67 Troubleshooting
5.68
A tabulation of troubleshooting is contained in
Table 5-3.
The table lists probable causes of and probable
remedies for correcting the malfunctions of the heater. The malfunctions and possible causes are listed in
the order in which they are most apt to occur. The troubleshooting procedures assume all operating
controls are properly set adjusted for the selected mode of operation.
Table 5-3
• Troubleshooting Chart
• • • • • • • • • • • • • • • •
TROUBLE PROBABLE CAUSE
REMEDY
1 Engine will not turn
1. Battery cables loose or not connected
Connect battery cables or tighten
over
2. Exhausted battery.
Replace with serviceable battery.
3. Defective starter.
Replace starter.
2 Engine turns over but 1. Cold weather below 5°F (-15° C).
Refer to paragraph 4.34.
fails to start or starts
2. Insufficient fuel supply.
Fill tank with appropriate fuel.
then stops
3. Clogged filter.
Replace filter.
4. Fuel return check valve dirty.
Clean or replace check valve.
5. Faulty fuel pump.
Check fuel pump paragraph 5.56.
6. V-belt slipping
Adjust v-belt.
7. Engine fault
Refer to engine supplement
3 Engine
stops
suddenly
1. Fuel tank empty.
Fill fuel tank with appropriate fuel
2. Contaminated fuel.
Drain and flush tank.
3. Incorrect fuel supply.
Drain and flush tank.
4 Burner fails to ignite
1. Insufficient fuel supply.
Refer to trouble 2 probable causes
2 and 3
2. Defective fuel pump.
Check fuel pump paragraph causes
2 and 3
3. Fuel pump pulley slipping.
Tighten set screen on pulley.
4. Defective burner control valve.
Replace burner control valve.
5. Defective coil.
Replace with serviceable coil.
6. Defective ignition cable.
Replace cable paragraph 5.46.
7. Defective igniter plug.
Adjust igniter paragraph 5.50 or
replace.
8. Fuel nozzle dirty or defective.
Clean nozzle or replace.
5 Burner ignites by
itself
1. Defective burner control valve.
Replace burner control valve
37