ADVANCED TROUBLESHOOTING
Motor and transformer do not operate.
Causes:
1. Incorrect or low voltage supplied to the heater.
2. Fuse in heater is blown.
3. Thermostat defective, or not turned up to call for heat.
4. Thermostat jumper cap not in place.
5. Control board is defective.
6. Reset button has not been reset.
Solutions:
1. Incorrect or low voltage supplied to the heater. Most indirect oil heaters require a minimum of 108 volts to operate properly. A multi-meter set to
measure volts can be used to check the amount of voltage at the end of the extension cord(s). If the measured voltage is too low, the length of the
extension cord (s) must be shortened or a thicker gauge extension cord must be used.
2. Fuse in heater is blown. Locate and remove the in-line fuse of the heater. Set a multi-meter to measure ohms of resistance. Place a multi-meter
probe on each end of the fuse. The multi-meter should read zero ohms (continuity) or the fuse is blown. If a new fuse blows immediately, check for
possible causes. Check for incorrect voltage to the heater. Make sure the total amperage draw of all equipment running on the circuit is not too
great. If the supplied voltage and total amperage draw are correct, check the wiring in the heater for correctness and possible shorts.
3. Thermostat is defective or not turned up to call for heat. Turn the thermostat up to the highest possible setting and try to start the heater. Next
set a multi-meter to measure voltage coming out of the thermostat. If approximately 120 volts is not measured, the thermostat is defective.
4. Thermostat jumper cap not in place. Indirect oil heaters have a female socket used to attach an optional remote thermostat. If the remote
thermostat is not being used, a jumper cap or “plug” must be inserted into the female socket to complete a voltage circuit, or the heater will not run.
5. Control board is defective. Using a multi-meter set for volts, check the hot and neutral wires which bring voltage into the control board. If proper
voltage is reaching the board then the control board is defective.
6. Reset button has not been reset. Push the reset button and try to start the heater.
Motor does not start, but ignition spark is present
Causes:
1. Control board is defective.
2. Motor is defective.
3. Motor start capacitor is defective.
4. Fuel pump seized
Solutions:
1. Control board is defective.Locate the terminals of the control board that connect to the motor wires. Use a multi-meter set to read voltage and
check for approximately 120 volts to the motor when the heater is turned on. If no voltage is observed the control board is defective.
2. Motor is defective. If the control board and the motor start capacitor check ok and the fuel pump is not seized, the motor is defective.
3. Motor start capacitor is defective. The capacitor may be tested using a multi-meter set to the lowest possible ohm range. First “short” the capaci-
tor by momentarily placing a screwdriver across the two capacitor terminals. Then place the multi-meter probes on the two capacitor terminals. The
multi-meter should read close to zero ohms (continuity) first, then slowly move to infinity on the multi-meter. If not then the capacitor is defective.
4. Fuel pump seized. With the heater unplugged, stand behind the heater and attempt to turn the fan blade clockwise by hand. If the fan blade is
difficult to turn, undo the connection between the motor shaft and the pump shaft. Attempt turning the fan blade again. If the motor now turns freely,
the pump has seized up. If the fan blade is still difficult to turn, the motor is defective.
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Summary of Contents for HVF180
Page 4: ...4 TECHNICIAN ...
Page 5: ... CFM 5 6 ft ...
Page 18: ...Chimney Exhaust Set Up 18 9 ft 30 ft 15 ft 3 ft 12 ft ...