Troubleshooting - Blodgett KLS-100G Installation Operation & Maintenance

7.0 TROUBLESHOOTING

PROBLEM
Unit will not come on.
Unit will turn on electrically but will not heat.
Excessive flame rollout on ignition,
carboning.
Unit slow to preheat and slow to recover.
Unit continuously locks out.
LOOK FOR
- Power switch is off.
- Unit not plugged in.
- Main power supply off.
- Faulty electronic module.
- Faulty low water control.
- Faulty igniter/sensor.
- Fuse in unit blown.
- Lockout has occurred.
- Thermostat not on.
- Gas control valve off.
- Main gas supply off.
- Low water.
- Faulty thermostat.
- Faulty pressure switch.
- Faulty gas control valve.
- Faulty or mislocated spark igniter/sensor.
- Faulty igniter cable - shorting to ground.
- Faulty gas control.
- Natural gas unit on propane.
- Excessive gas pressure.
- Incorrect orifice size.
- Faulty regulator in gas control.
- Propane gas on natural.
- Low gas pressure.
- Incorrect orifice size.
- Loss of vacuum.
- Faulty regulator in gas control.
- Excessive draft condition.
- Excessive steam around bottom of unit
during operation of cleaning.
- Faulty electronic module.
- Ignitor cable damaged or shorting to ground.
- Faulty or mislocated spark igniter/sensor.
- Faulty gas control.
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