Hired-Hand Universal Ray Tube Heaters: AG1 Series - Manual (Page 14)

14
4.0 Troubleshooting Guide
4.0 Troubleshooting Guide
Continued on page 16.
AG1 Series
4.0 Troubleshooting Guide
Is the blower
obstructed?
Replace circuit board.
Does the ignitor warm
up and glow red?
Is the ignitor
physically
damaged?
Check voltage at ignitor during
ignition sequence (usually 30-
45 seconds after power to the
heater). Is it 120V?
Is the inlet or the outlet of the unit
obstructed (i.e., ice, birds nest, dirt,
flapper cap stuck closed, etc.) ?
Turn up thermostat
Does the fan
blower turn on?
Is the power at the
heater 120V?
Find the source of the electrical problem
between panel/thermostat and heater.
No
Yes
Remove obstruction
and lubricate fan.
No
Yes
Does the switch
light energize?
Yes
Is the light burnt out?
If so, replace.
No No
Yes
Remove obstruction.
No
No No
No
Yes
Yes
Replace ignitor.
Does valve light
energize?
Yes
Does the burner
ignite at all?
No
The circuit board and/or wiring
harness may be faulty and
needs to be replaced.
No
Yes
Replace faulty light.
Does valve open?
Yes
Yes No
No
Yes