Troubleshooting; Preliminary Checks - IBC EX Series Installation & Operating Manual

8.0 Troubleshooting

Often, you can identify a problem and solve it through basic checks: confirming the electrical power
supply, gas flow and resetting the thermostat control. For troubleshooting, we recommend that you use
the three-step approach illustrated below.
Note
The boilers are equipped with a blocked vent shutoff system, which closes the gas supply
upon detection of an irregular venting condition. In such an event, the electronic controller
automatically carries out a reset/ retry every 5 minutes.
The troubleshooting section is divided into 3 sections:

Preliminary checks

Electronic components
Troubleshooting error messages
Often, a problem can be identified and solved through simple checks of the basics: confirming the
electrical power supply, gas flow and resetting the thermostat control.
8.1 Preliminary checks
The first step in troubleshooting this system should be a review of the touchscreen controller. There are
a number of diagnostic features incorporated in the software that evaluate system integrity, display
error conditions and provide initial remedial actions.
In addition to checking the display, the following list is a guideline for troubleshooting:
Confirm power to the boiler: check that the touchscreen controller display is on (e.g.,
display is lit. The touchscreen controller's display will be fully functional in 90 seconds
after power is restored to the boiler.)
Check that the boiler is not in a safety lockout.
Ensure wiring is clean and secure.
Check that gas is reaching the appliance.
Check the gas pressure switches.
Confirm that the water system is properly charged within specifications, and that the pump
is serviceable.
Preliminary Troubleshooting Checks
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