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V
ICTORY
General Troubleshooting Guide For Servicepeople
BURNERS FAIL TO OPERATE
CAUSE
1. Gas supply valve shut off
2. No power, main electric switch open
3. No power, blown or defective line fuse
4. Pilot flame too low
5. Ignition system control switch is on "OFF" position
6. Harnesses plug-in connectors are not
securely connected
7. HSI element damaged or broken (does not glow red)
8. Flame sensor contaminated
9. Roll-out switch open
10. Defective air flow switch, restriction or obstruction in
venting system (motor run for 30 seconds)
11. Defective blower motor
12. Defective transformer
13. Defective Smart Valve
14. Defective electronic Aquastat
BURNERS WILL NOT SHUT-OFF
CAUSE
1. Defective Aquastat
2. Aquastat sensor is not properly inside Aquastat well.
FLASH BACK-BURNING AT ORIFICES
CAUSE
1. Manifold gas pressure too low
2. Improper primary air adjustment
3. Gas regulator bleed too slow
4. Burrs on orifices
5. Improper orifice
6. Adverse draft condition in boiler room
7. Low main gas pressure
REMEDY
1. Open gas valve
2. Close switch
3. Replace fuse
4. Adjust pilot flame
5. Move switch to "ON" position
6. Check connectors
7. Replace element
8. Clean sensor
9. Replace roll-out switch (inspect flue passages prior to
replacement)
10. Check air flow switch hose connections. Check for obstruc tion
or restriction in venting system. Replace defective switch.
11. Check voltage (120V) at motor connector. Replace
defective motor.
12. Remove connector marked C, R on Aquastat. Check
transformer connector terminals for 24V. Replace
defective transformer.
13. Set thermostat and Aquastat to call heat. Remove connector
marked B2, B1, R on Aquastat. Check terminal B2, B1 for 24V.
Follow Smart Valve system troubleshooting in Smart Valve
(Honeywell) Instruction Manual to find out if Smar t Valve must
be replaced.
14. Set thermostat and Aquastat to call heat. Remove connector
marked B2, B1, R. Check voltage at B1, B2 (24V nominal).
Remove thermostat connections from T or TV terminal. No
voltage between B1 and B2. If Aquastat fails above tests,
replace Aquastat.
REMEDY
1. Test Aquastat as 14 on page 25, replace def ective Aquastat.
2. Insert the senser into the well. Make sure the sensor fits
securely against the bottom of the w ell. Secure sensor and
lead wire with mounting clamp.
REMEDY
1. Adjust to proper manifold pressure
2. Adjust air to produce soft, clean flame
3. Adjust bleed opening
4. Remove burrs
5. Install proper orifice size
6. Check air supply and venting system
7. Contact utility
25
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