Brant Radiant Heaters AVS-40N Instructions Manual page 35

AVS 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.
Start
Question
Check both high temperature spark
wires and both electrodes. If good,
replace circuit board.
Yes
Is there 24V across
the circuit board with
terminal to ground?
Check for loose wiring or restrictions
in the hose connections to pressure
switches. Are they OK?
No
Replace wiring or hose connections.
Key
Corrective
Process
Action
Question
No
Yes
5.0 Maintenance
Repair faulty wiring.
Replace the pressure switch after verifying:
• Heater, fan blowers ,squirrel cage, intake
and exhaust are clean and free from dirt and
obstructions.
• The 4" air intake pipe does not exceed 30 ft. and/or
2 elbows.
• There is not a negative pressure experienced at
the area of air intake (e.g.; high winds, attic space,
tightly sealed building). May vary for agricultural
buildings (consult factory).
35
• Troubleshooting Guide