Thermostat Closed, Fan Operates, No Glo-Bar Energization - Re-Verber-Ray DX Troubleshooting Manual

2 - Thermostat Closed, Fan Operates, No Glo-Bar Energization

2.1
Locate any disconnected or loose wires and repair.
2.2
The normally open Burner Pressure Switch is located on the fan side of the heater (pg. 8, pic. 1 ). This switch
must be closed before the glo-bar can be energized. *Bypass this switch (pg. 19, #6) to check for proper function.
Once bypassed, reinstall the cover and test the heater. If it works, there is a problem with the burner pressure
switch or what it is sensing, and you should continue with step 2.2.1. If bypassing this pressure switch does not
make the heater work, continue with step 2.3.
2.2.1
Be sure lid is on correctly and gasket is intact.
2.2.2
Make sure the clear vinyl tube that bleeds pressure to the outside of the heater is clean and clear of
obstructions.
2.2.3
Make sure the heater's vent cap is in place and in good condition. Also, check for obstructions within the
cap.
NOTE: Excessive winds may cause properly operating safety pressure switches to shut down the heater. Heaters ducted through (on either the
intake or exhaust sides) the roof may be deprived of the air necessary to pressurize the burner box. This "chimney effect" will typically not
allow the burner pressure switch to close. Heaters vented through a sidewall may see too much back-pressure, thus opening the exhaust
pressure switch. In either case, the caps need to be shielded to lessen the effects of high winds.
2.2.4
Make sure the heater's baffle is located properly. It should be found at the exhaust end of the emitter tube.
2.2.5
The fan may not be accurately pressurizing the heater. Clean obstructions from the air-intake pipe and cap
(pg. 8, pic. 8). Clean the squirrel cage. Oil the motor (SAE-20). Examine and clean the fan blades
(pg. 8, pic. 5). Once the fan is completely clean, retry the heater, without bypassing the Burner Pressure
Switch. If the glo-bar is still not energizing, continue with Step 2.2.6.
2.2.6
If steps 2.2.1 - 2.2.4 were performed and the heater still won't properly function, the burner pressure switch
is faulty.
Refer to warnings on cover prior to servicing the unit. Bypass safety pressure switches for supervised troubleshooting purposes only.
*Do not leave switches bypassed while the heater is unattended or for normal operations.
(This step is applicable for all models)
Consult Detroit Radiant Products for further technical information
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