HDT Camfire CV125CG, Operation Manual

Page: 19 / 40

20
PROBLEM
– HEATER DOES NOT START.
POSSIBLE CAUSE TEST PROCEDURE
A. Safety control locked out. 1. Push and hold red reset button for 120 seconds.
B. No power or low voltage at
heater. 1. Check that heater is plugged in.
2. Ensure voltage at heater is the same as indicated on heater Data Plate
located on top cover and as indicated in the Specifications, Page 5.
3. Use an extension cord of sufficient gauge to carry the electrical load of
the heater (see Chart, Page 8).
C. Thermostat (if used) improperly
set or defective. 1. Adjust thermostat to a higher setting. If heater still does not start,
disconnect thermostat from heater and plug heater directly into power
cord.
.
D. Fan obstructed by mechanical
damage or dirt. 1. Check for bent outer shell, damaged fan, or damaged motor mount.
2. Replace a damaged fan. Do not attempt to repair.
E. Defective photocell. 1. Open access hatch. Remove photocell from bracket attached to burner
head.
2. Disconnect blue and white photocell leads.
3. Connect ohmmeter test leads to photocell leads.
4. Hold open end of photocell towards a light source (a 60 watt light bulb
or direct sunlight). The resistance indicated on the ohmmeter should be
low.
5. Block off light completely by covering the open end of the photocell.
Within 10 seconds the resistance indicated should be high.
6. Replace photocell if there is no change in resistance during this
procedure.
F. Broken air pump rotor or carbon
blades. Pump rotor binding. 1. Remove inlet screen. Remove pump end cover and pump front cover.
2. Visually inspect rotor and blades for breakage.
3. Ensure that the rotor and blades are free of any lubricant or debris.
4. Check rotor with feeler gauge for proper clearance between rotor and
pump body (see Section 5, Part M, Page 26).
Trouble Shooting Chart