Technical data

GUH RANGE PROPANE GAS FIRED UNIT HEATERS
Page 30 of 41
Fig 25
Manual and Automatic Operation
Fig 26
Fig 27
Pilot flame
is
Established
but Main
Burner will
not Ignite
Faulty Wiring
from Control to
Valve
Replace
Faulty Control
Unit
Faulty Second
Stage Valve
Fan will not
Run
Fan Control
is Open
Circuit
Check that Fan
will run when
Main Gas is
On
Replace
Faulty Fan
Control
Open Circuit to
Fan Motor
Check Wiring and
Connections
Fan runs
but stops
when Main
Burner is
ali
g
ht
Faulty Motor
Fan Control is
Open Circuit
Low Ambient
Temperature
Check that
Fan will run
when Main
Gas is On
Check that
Fan cycles
On / Off.
Check Fan
Button,
Check Fan
Stat Settings
Replace
Faulty Unit