Unit Protection Devices - Kingspan KHP0041 Installation And Maintenance Manual

Refrigerant Diagram and Unit Protect Devices
GMC Board Alarm Codes
There is an LED on the GMC board that displays any board
errors. The error code can be identified from the flashing
LED using the following table. In the case of more than one
error, the error with the highest priority will be displayed
until it is resolved.
In the case of normal operation, the LED flashes at a
frequency of ½ Hz. In the case of an error, the LED remains
off for 4 seconds, then at a frequency of 1Hz, it flashes a
number of times equal to the error code and than remains
off again for 6 seconds. If the error code has 2 digits, the
flashing is interrupted for 2 seconds between the first and
second digits.
Code Description
2 Safety Input
3
4
5 Outdoor Air Sensor of GMC
6 Loss communication to NUI control
7 NUI control Room Sensor
8 Unit Capacity Mismatch
9
10 EEProm Corrupt
13 Loss Communication to RS485 (system configuration type 6)
14
15
17
18 G-Tr inverter short circuit protection
20 Compressor position Detection Circuit error
21 Inverter Current Sensor error
22
23
24
26 Other inverter board error
27 Compressor Lock
28
29 Compressor Breakdown
Board position
Legend:
A Position 4 LED Inverter Diagnostics Board (KHP0040 only)
B Position LED GMC Diagnostics Board
C Installation terminal strip
24
Example: error 23: LED off for 4 seconds. 2 flashes at a
frequency of 1Hz. Off for 2 seconds. 3 flashes at a frequency
of 1Hz. Off for 6 seconds. The cycle repeats until the LED
turns off because the problem is resolved or if an error with
higher priority occurs.
To reset the unit after an error has been cleared turn off the
mains supply for 10 seconds and turn on again.
(Fig. 12)