Service Procedures; Fuel Filter - Master B 70 CEL Bedienungsanleitung

TROUBLESHOOTING
6

SERVICE PROCEDURES

GB
TROUBLESHOOTING
Continued
FAULT CONDITION
Heater ignites but ignition control
assembly shuts heater off after a
short period of time (ON/OFF switch
light remains on)
ON/OFF switch light does not come
on when switch is turned to the ON (|)
position and heater does not start
ON/OFF switch light comes on when
switch is turned to the ON (|) Position
but turns off after fi ve seconds
SERVICE PROCEDURES
WARNING: Never service heater while it is plugged in,
operating, or hot. Severe burns and electrical shock can
occur.
UPPER SHELL REMOVAL
1. Remove screws and lock washers along each side of heater
using 5/16" nutdriver. These screws attach upper and lower
shells together.
2. Lift upper shell off.
3. Remove fan guard.

FUEL FILTER

(35.000 and 70.000 Btu/Hr Models)
1. Remove side cover screws using 5/16"nutdriver.
2. Remove side cover.
3. Pull rubber fuel line off fuel fi lter neck.
4. Carefully pry bushing and fuel fi lter out of fuel tank.
5.Wash fuel fi lter with clean fuel and replace in tank.
6.Attach rubber fuel line to fuel fi lter neck
POSSIBLE CAUSE
1.Pump pressure incorrect
2. Dirty air intake, air output, and/or lint
fi lter
3.Dirty fuel fi lter
4. Obstruction in nozzle assembly
5. Photocell assembly not properly installed
(not seeing the fl ame)
WARNING: High voltage!
6. Dirty photocell lens
7. Bad electrical connection
photocell and ignition control assembly
8. Defective photocell
9. Defective ignition control assembly
1. No power to heater
WARNING: High voltage!
2. Bad electrical connections
3. Electrical short in ignitor
1. Electrical short in motor
REMEDY
1. See Pump Pressure Adjustment, page 8
2. See Air Output, Air Intake, and Lint Filters,
page 8
3. See Fuel Filter, page 6
4. See Nozzle Assembly, page 8
5. Make sure photocell boot is properly
seated in bracket
6. Clean photocell lens
7. Check electrical connections. See Wiring
between
Diagram, page 17
8. Replace photocell
9. Replace ignition control assembly
1. Verify that power cord is plugged into an
electrical outlet and that the circuit breaker
in the electral panel is reset
2. Check electrical wiring and connections.
See Wiring Diagram, page 17
3.Check ignitor wiring. If no problems are
found, replace ignitor (see page 7)
1.Check motor wiring. If no problems are
found, replace motor
7.Replace side cover.
FUEL FILTER
(100.000 and 150.000 Btu/Hr Models)
1. Remove side cover screws using 5/16"nutdriver.
2. Remove side cover.
3. Pull upper fuel line off fuel fi lter neck.
4. Carefully pry bushing, lower fuel line, and fuel fi lter out of fuel
tank.
5. Wash fuel fi lter with clean fuel and replace in tank.
6. Attach upper fuel line to fuel fi lter neck.
7.Replace side cover.
Continued