4.
Unable to light pilot
A. First time light attempt – air in gas line
Purge air from gas line (test gas supply pressure)
B. Blocked pilot orifice
Clean or replace
C. Check gas supply
Gas line connected? Valve open?
D. Pilot out of adjustment
Open up needle valve (counter clock-wise to increase)
E. Blocked or defective gas valve
Replace gas valve
5.
Pilot won’t stay lit after releasing gad cock dial, goes out immediately
A. Inadequate pilot gas flow
Clean orifice with compressed air / increase pilot gas flow (CCW)
B. Bad thermocouple / corroded connection to gas valve
Replace, clean, check/tighten connections on gas valve
C. Bad gas valve
Replace by qualified service person
D. Downdraft through furnace
Draft hood installed? Exhaust fan on?
6.
Pilot won’t stay lit (intermittently) goes out at night…
A. Inadequate pilot gas flow
Clean pilot orifice / increase needle valve flow
B. Weak thermocouple
Replace
C. Draft through furnace
Is draft diverter installed? Exhaust fan on? Weak pilot gas flow
TROUBLESHOOTING
(continued)
19
Содержание ROYAL HEAT 240
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