Carlin 601GAS Inst Manual - Manual (Page 22)

Model 601GAS burner — Instruction manual
Carlin part number MN601GAS Rev. 04/24/09
– 22 –
Where appliance instructions differ from this manual, follow the appliance instructions.
7. Troubleshooting
(continued)
Problem Possible
cause
Corrective action
WARNING
These procedures must only be performed by a qualified service technician. Use care
when performing tests on electrically or mechanically live parts. Disconnect power to
burner/appliance and close main manual gas valve when removing components for ser-
vice. Failure to comply could result in severe personal injury, death or substantial property
damage.
Burner lights, but
locks out after TFI Insufficient flame
signal The flame signal at the 60200FR test jack must be at least 0.8 microamps. Check follow-
ing if signal is lower.
Flame rod may be touching ground, insulator may be broken, or contamination may cause
a path to ground. Inspect and clean if necessary. See page 11 for more information.
Check the flame rod position in burner per page 11. Adjust if necessary. The flame rod
must be correctly positioned for best flame signal.
Airflow Check air damper setting against Table 1a, page 9.
Orifice size Check gas orifice size. See Table 1a, page 9.
Manifold pressure Check gas manifold pressure — should be between 3.2 and 3.8 inches w.c.
Low gas supply
pressure Check line pressure at gas train entrance. Gas pressure must be at least 5 inches w.c. —
If other appliances are on the same line or regulator, and burner pressure drops when they
are on, the line is undersized. Contact your gas supplier.
If gas pressure is always low, check the supply regulator setting and adjust if necessary.
Inlet gas pressure must not exceed 14 inches w.c.
Improper draft Over-fire draft should not be higher than specified in the appliance manufacturer's instruc-
tions. Follow the appliance manual instructions to troubleshoot excess overfire pressure or
poor draft problems if necessary.
Flame rod grounded Check flame rod and insulator. If the flame rod is grounded in any way, the control will lock-
out after the trial for ignition.
120 VAC polarity Check the power supply polarity. If hot and neutral wires are reversed, the flame rod circuit
cannot sense flame correctly. The 60200FR control will lockout after the trial for ignition.