Honeywell Experion C300 User Manual

Fixing common problems
Loss of power
R301.1 Experion C300 Controller User's Guide 221
11/06 Honeywell
Loss of power
The power supply has failed or the main power source has been shut down or is
experiencing a brownout or blackout condition.
Diagnostic Check
• The 4-character display on the C300 Controller and LEDs on the
controller module and the IOTA are off.
• In the Monitoring tab, the C300 Controller icon turns red.
Cause 1
Main power source has been disconnected or shut down either manually
or temporarily by brownout or blackout condition.
Solution
Re-connect the main power source or turn it On or wait for temporary
brownout or blackout condition to pass.
Cause 2
The 24 Vdc power supply failed or power cable has been disconnected
or failed.
Solution
Replace the 24 Vdc power supply or re-connect/replace the power cable.
Cause 3
Power fuse opens on IOTA.
Solution
Replace power fuse.
Power-On Self Test (POST) does not complete
The C300 Controller Power-On Self Test (POST) has detected a fault.
Diagnostic Check
A self test diagnostic code remains on display and the POST does not
continue.
Possible indications: Display shows test pattern, or Tnnn (nnn = a test
number which is executed during POST).
Note that if display shows ‘T499’ POST has completed.
Cause
The C300 Controller POST has detected a failure that does not allow
operation to continue.
Solution
Short the reset pads on the IOTA to re-start the C300 Controller. If error
persists, replace the controller module. See C300 Controller module and
IOTA replacement for details.

Honeywell Experion C300 Specifications

General

Brand	Honeywell
Model	Experion C300
Category	Controller
Language	English