Airport 828HC, Instruction Manual

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©
Airport Lighting Company
15
7.0 Troubleshooting
Always maintain safe working conditions by using appropriate personal protective equipment
(PPE) where necessary.
Follow all lock out / tag out procedures as necessary.
If the problem you’re experiencing is not listed in this section, or if the included steps to fix do
not address the issue, contact Airport Lighting Company.
7.1 Troubleshooting Chart
Fully read the description and steps to fix thoroughly before completing work. Complete all steps
to ensure a proper fix. For more information, contact Airport Lighting Company.
Problem Likely Cause(s) Steps to Fix
The CCR will not
turn on.
- CCR supply voltage
feeder is not on.
- Blown fuses within the
CCR
- The control transformer
is not providing 12VAC
- Faulty DCMU
- Check to see if the CCR feeder supply
breaker has tripped.
- Verify the supply voltage with a DMM
- With all power off, verify the integrity
of the electrical connections.
- Check the CCR fuses
- With power on, check the control
transformer voltage
- Replace DCMU if a spare is available.
Display is blank /
the CCR display
buttons don’t
work.
- There is a bad
connection between the
DCMU and the CCR
display
- First, see if the CCR operates in
Remote mode. If it doesn’t, refer to
“The CCR will not turn on.”
- If the CCR operates in Remote mode,
try unplugging and reconnecting
display cable at either end.