Airport 828HC, Instruction Manual

Page: 27 / 49

©
Airport Lighting Company
17
Problem Likely Cause(s) Steps to Fix
Regulated current
is less than 2.8 and
cannot be
increased
- Solid state relay (SSR)
has failed.
- The output current
calibration is not
correct.
- Using a DMM, verify the output
current. If the current measured on
the DMM does not match the CCR
displayed current, refer to Section
7.3.1 .
- If the output current calibration is
correct, the issue may be with the
SSR. Disconnect power from the CCR.
At the SSR, disconnect one of the
inductor lines, IND A or IND B, that
are connected to the contact side of
the SSR. Use a DMM to check the SSR
contact – it should be normally open.
If it isn’t, the SSR was damaged.
Contact Airport Lighting Company.
Output current is
too low for the
selected
brightness step
- The output current
needs to be
recalibrated.
- The CCR is overloaded.
- Using a DMM, verify the output
current. If the current measured on
the DMM does not match the CCR
displayed current, refer to Section
7.3.1 .
- To see if the CCR is overloaded with
the connected circuit, compete the
following steps:
- Put the CCR in Local mode, and then
disconnect CCR supply power.
Connect the male and female
outputs. Re-energize the CCR, and
turn it on to the first brightness step.
If the CCR continues to present the
fault, contact Airport Lighting
Company. If the problem resolves
itself, it is likely that the test circuit is
overloading the CCR.