Service manual
12-28
CONTROL SYSTEM
SM CINCO 1-A.1 GB
Stored Matrix Type
[Rows, Column]
How to present?
2 x 2
Repeat: r1(keep 2 sec) X1Y1 (keep 2 sec)
Repeat: r2 (keep 2 sec) X2Y2 (keep 2 sec)
3 x 3
Repeat: r1 (keep 2 sec) X1Y1Z1 ( keep 2 sec)
Repeat: r2 (keep 2 sec) X2Y2Z2 (keep 2 sec)
Repeat: r3 (keep 2 sec) X3Y3Z3 (keep 2 sec)
4 x 4
Repeat: r1 (keep 2 sec) X1Y1Z1 (keep 2 sec) W1 (keep 2 sec)
Repeat: r2 (keep 2 sec) X2Y2Z2 (keep 2 sec) W2 (keep 2 sec)
Repeat: r3 (keep 2 sec) X3Y3Z3 (keep 2 sec) W3 (keep 2 sec)
Repeat: r4 (keep 2 sec) X4Y4Z4 (keep 2 sec) W4 (keep 2 sec)
NOTE: SCROLLING BETWEEN R1, R2, R3, AND R4 IS DONE THROUGH THE ‘UP’ AND ‘DOWN’ BUTTONS
DEFINITIONS
Term Definition
‘F’
Clogged EEV
EEV Coil problem
EEV driver problem
Clogged indoor unit or part of it.
Problem in ICT sensor
Extremely high load at the indoor side
‘T’
Valve always open
EEV coil problem
Driver Problem
C Non detected channel
N Null- never done before
12.8 Technician Test Mode
This test is aimed for the technicians to check the system under a preset compressor and outdoor fan values while
the expansion valves will function according to the normal running mode.
12.8.1 Entering technician mode
o This mode is entered through the outdoor unit using the HMI (refer to user interface section).
o It can be selected either for cool or heat.
o Technician test is not possible to enter during deicer.
12.8.2 Technician mode procedure
All the connected indoor units will enter technician test at high indoor fan speed.
The outdoor unit will be working normally (according to the run mode control logic) except the following
changes:
o The dry contacts inputs will be ignored.
o Protections will be operative for stop compressor.
o The compressor and the outdoor fan will be working in target preset values according to the number and size of
IDUs.
12.8.3 Exiting technician mode
Technician mode will be exited either when:
o Escaping by the HMI (exiting the ttC or ttH menus)
o 60 minutes are passed from entering