Troubleshooting Error Messages - IBC EBX Series Installation And Operation Manual

11.2 Troubleshooting error messages

Error
Over temperature limit
No flow
Temp Sensor Inlet
Temp Sensor Outlet
Temp Sensor Outdoor
Interlock Open
MODbus Error
Warning Description
Low Water Flow
Open Outdoor Sensor
Summer Shutdown
ERROR MESSAGES
Outlet Temperature ≥ 200°F (88°C); auto reset at 190°F (82°C)
Flow of 0 gpm for 1 min after pump is started
Inlet Negative Temperature Coefficient (NTC) sensor is open or
closed
Outlet NTC sensor is open or closed
Outdoor NTC sensor is open or closed
An external safety dry contact may be tied into CN6 block
terminals 3 & 4 (labeled INTLCK A / B). A jumper must be
installed if an external interlock is not required.
Displayed after successful MODbus communication has
stopped for two continuous minutes. Error can be cleared with a
power cycle to boiler.
WARNING MESSAGES
Water flow below 0.5 gpm (1.9 lps)
Active only for ODR heating mode. If outdoor sensor is open
controller presumes a temperature of 32°F (0°C)
Current outdoor temperature has exceeded programmed Design
Temperature
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11.2 Troubleshooting error messages
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