Aux. Interlock 1 Or; Miscellaneous Touchscreen Controller Errors - IBC CX Series Installation And Operating Manual

8.2.4 Aux. Interlock 1 or 2

Issue
Interlock 1 or 2
terminals are open.

8.3 Miscellaneous touchscreen controller errors

Issue
" Loop/Indoor Sensor"
"Insufficient Air Flow"
"Insufficient Water
Pressure"
"Unknown Error"
Error - Max.
Inlet/Outlet Sensor
Temp. Exceeded. >
Check water flow
Water temperature
signal not within
acceptable range.
Potential flow or
sensor failure. Consult
service technician.
Blank – screen dark,
but fan running
Indicative of power-
surge damage to
appliance
Controller is stuck in
Aux. Interlock 1 or 2
Diagnosis
Jumper lead is loose Replace the jumper lead.
or compromised.
External safety is in an Inspect the external safety devices.
alarm state.
Miscellaneous errors
Diagnosis
The sensor plug is not Check the P501 plug is fully engaged in the
engaged. back of the controller board.
The sensor plug is not Check the P501 plug is fully engaged in the
engaged. back of the controller board.
Temperature sensor Test each temperature sensor for appropriate
input problem. readings and Replace defective temperature
sensor.
Current outlet Check water flow.
temperature exceeds
operating limit.
Defective or
Check wiring to temperature sensor and
disconnected
control module.
temperature sensor.
Check temperature sensor.
Check transformer; replace if damaged.
Check circuit board for visible damage.
If update fails or no Restarting returns the boiler to normal
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8.2.4 Aux. Interlock 1 or 2
Fix
Fix