Troubleshooting
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B0600008_US
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6
6
Troubleshooting
6.1
General faults in power supply
Error indication
Cause of error
Troubleshooting
Nothing is shown on the
display
No power to the controls
General power failure
Ground Fault Circuit Interrupter
or line protection is switched off
Main Switch is turned off
Defective fuse
Switch on the Ground Fault Circuit In-
terrupter or line protection
Turn on the main switch
Replace fuse – note amperage rating
In the event of loss of electrical Power:
Do not open any Boiler Doors or Ash-Pit Door
Do not load fuel into the boiler
Boiler Control System automatically restarts after power fail restart
One hour after power has returned, check system for normal
operation and compare manometer reading to initial settings.
If system pressure is below, replenish water to the heating
system according plumber’s instructions.
6.2
Excessive temperature
The Overheat Thermostat stops combustion at a boiler temperature of
212°F (100°C). The circulators continue to run!
In case Overheat Thermostat automatically has been activated:
Wait for boiler temperature to drop below 170°F (77°C)
Remove cap of Overheat Thermostat (STL) by screwing-off counter-
clockwise. STL located at right hand side of Boiler Control System
viewed from front side of the boiler.
Release STL by pushing button behind cap using a small screw driver or
ball point pen. Release was successfully, when fault is gone on display.
Screw-on cap of STL again (clockwise).
