NORMAL OPERATION, TROUBLE-SHOOTING
The Red neon light illuminates as soon as the heater is hooked to the tractor/trailer's clearance light. The Red light indicates that the battery is charging (by microelectronic pulsating built in the MEPCA). The 12-V battery from the tractor/trailer's clearance light powers the battery. Four hours after they are properly connected, the battery will be charged. If the red light does not illuminate, the battery cannot be charged. Each new battery can be used to start the heater more or less approximately 55 times without charging.
If the red light does not illuminate,
When the gas control valve knob is turned on to PILOT and then the knob is pressed to the end, the ball in the flowmeter should reach around No. 4.
If the ball in the flow meter reads zero or below No. 4,
If the ball in the flowmeter jumps up over No.10, it indicates a bad pilot adjustment. Re-adjust the pilot.
If the flowmeter reading is higher than No. 4, check for leaks (soap test) in fuel line between the flowmeter and the heater.
If the flowmeter reading is unsteady, erratic and bobs up and down, the fuel tank had been over- filled (liquid could be seen inside the flowmeter and fuel line). Purge the 3/8" main fuel line between the flowmeter and the regulator.
NOTE: When the propane tank is opened and the ball in the flowmeter jumps up more or less 1/4" from the bottom BEFORE the gas control knob is turned ON, it indicates damaged gas line or fittings and propane may smell inside the trailer. Check for leaks using soap test.
When the START button is pressed the green neon light will illuminate for 2 minutes and 15 seconds after which the red neon light will illuminate. (When the red light illuminates, it indicates that the 6-V battery is charging).
If the green neon light does not illuminate,
a) Check the green neon light and replace if broken
If the green light stays on and the terminals are properly connected but the ball in the flowmeter does not stay on No. 4 and keeps on falling down, after a few seconds, tighten by 1/4" turn the butterfly connection on the RV 18 valve. After tightening, if the ball on the flowmeter still does not stay on No. 4, it indicates that the RV18 valve is damaged and must be replaced.
If the flowmeter and the lights are working properly but heat does not come out of the catalyst:
a) Check the activator and replace if broken
If the heater stays on for about 10 minutes and shuts off check the thermocouple. Adjust and make sure that the thermocouple touches (snug tightly) the catalytic pad. Further, ensure that thermocouple wiring is intact and not corroded/spliced/frayed.
Every year from July to September, we conduct a free seminar/training on heater's maintenance procedure to maintenance personnel and drivers. For appointment, please call (905) 855-9600.
Copyright 2004 by Protective Heat Development Group Ltd.
Protective Heat Development Group Ltd.