Midco Unipower G-Series - Manual (Page 16)

Trouble Chart Continued
H . Defective flamerod wire
I . Defective or misadjusted flamerod
J . Defective amplifier
K . Defective flame safeguard
A . Low gas pressure
B . Misadjusted main regulator
C . Blocked regulator vent
D . Defective main regulator
E . No power at main valve(s)
F . Blocked main valve bleed line (if equipped)
G . Defective main valve(s)
H . Closed test cock
I . Input adjuster closed
J . Defective flame safeguard
A . Poor pilot
B . Pilot gas pressure drops severely when main gas valve opens
A . Too little gas
B . Low gas pressure
C . Defective main regulator
D . Misadjusted main regulator
E . Too much air
F . Partially closed test cock
A . Too much gas
B . High gas pressure
C . Defective main regulator
D . Misadjusted main regulator
E . Misadjusted input adjuster
F . Too little air
G . Dirty blower wheel
A . Defective valve(s)
B . Defective valve actuator
C . Dirty valve seat
A . Low voltage
B . Spasmodic start
C . Defective motor
D . High ambient temperature
A . See IV above
B . See V above
C . See VI above
N o t e : Some of the probable causes listed above apply only to certain models as indicated,
therefore some may not apply to your particular case.
VI. Pilot Lights, No Lockout on
Flame Safeguard, No Main Gas
VII. Main Flame Lights, But Goes
Out, Pilot Relights
VIII. Short Main Flame
IX. Long, Hazy Flame
XII. Flame Safeguard Needs
Frequent Resetting
X. Main Valve(s) Fails
to Shut Off or Leaks
XI. Motor Overload
Frequently Trips Out
V. Pilot Lights, Flame
Safeguard Locks Out
Continued