Re-Verber-Ray DET3 Series Insert Manual page 15

DET3 Series
Bypassing any switch is intended for testing purposes only. Do not leave switch bypassed
NOTICE
*
during normal operation or the heater's built-in safety mechanisms will be compromised.
Correct wiring or
replace relay.
No
Is there 120VAC coming to the
fan from the low fire relay?
Remove obstruction
Yes
Is the inlet or outlet of
the unit obstructed? i.e.
ice, birds nest, dirt, etc.
*
While the switch is
temporarily bypassed,
check for 120VAC from
the switch to the circuit
board. Does 120VAC
enter the circuit board?
No
Faulty wiring.
Repair or
replace wiring.
Replace circuit board.
Yes
Check for loose wiring
or restrictions in hose
No
connections to the pressure
switch. Are they ok?
The heater is equipped with a safety differential
No
open switch and is located in the air chamber.
Temporarilly place a jumper across the terminal of
Yes
Start
Question
The blower is faulty
and must be replaced.
Yes
pressure switch. The switch is a normally
the switch. Does the igniter spark?
Yes
Replace the pressure switch after verifying the
following:
• Baffle(s) is in the tube farthest from the burner.
• Heater, blower, squirrel cage, intake and
exhaust are clean and free from dirt and
obstructions.
• The 4 in. dia. air intake pipe does not exceed
20 ft. and/or two elbows.
• There is not a negative pressure experienced
at the area of air intake (i.e. attic space, high
winds, very tight buildings, etc.)
If any of the above were occurring, please
address the problem.
15
4.0 Troubleshooting Guide
Key
Process
Corrective
Question
Action
No
Repair wiring or hose
connections.