Troubleshooting; Faults And Warning Messages - Honeywell IAQPoint2 Technical Manual

Troubleshooting

Faults and warning messages

Faults are handled in different ways, depending on the configuration of the unit� 4-20 mA loops
will drop below 2�0 mA� Relays will de-energize� Fault codes in fieldbus-equipped units will be
displayed on the touchscreen� The event history of recent fault codes (approximately the last
fifteen) is displayed but fault codes are not stored� A level 2 password is required for access to the
event history screen�
Affected
Version
Models
• • • •
IAQPoint2 Troubleshooting Guide
Diagnostic
Symptom
Tests
Measure voltage
between terminals T9
and T7 and confirm
that 20-30 VAC or
18-28VDC is sup-
plied.
(Non-display models
All analog outputs
only) Confirm that
produce 0 mA or 0
the LED on the right
VDC
side flashes for 5
seconds after power
is applied.
Unplug the USB
cable.
IAQPoint2
Cause Solution
External wiring has Provide 24 V AC/DC
an error. power.
Microprocessor will
not boot if USB is Unplug USB cable.
connected.
IAQPoint2 is defec-
Replace.
tive.
continued...
43