Troubleshooting Guide - LION LEB dc Series Installation Manual

Troubleshooting Guide

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