Troubleshooting Guide
Problem
Correction
Boiler not heating, water cool.
Check power supply, fuses or breakers.
Check thermostat setting.
Check temperature control inside the boiler.
Boiler heating pipes cool.
Check for air in system.
Check pump circulation.
Check all valves.
Check for flow stoppage, or air locks.
Boiler rapid cycles.
Check anticipator setting.
Check pump circulation.
Boiler operates continuously.
Check anticipator setting.
Boiler noisy.
Oversized pump.
Flow rate too high.
Flow rate too low.
Pump location incorrect.
Boiler not heating enough
Insufficient capacity.
Burnt Elements.
Flow rate too low.
Pressure too high.
Defective expansion tank.
Defective automatic fill valve.
Expansion tank too small.
Safety relief valve dripping.
Check expansion tank.
Flush relief valve.
See the troubleshooting step by step procedure at the end of this manual for additional
information.
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