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/8
TROUBLESHOOTING
!
] ~ [
] Activation of high pressure switch (PSH
1~6
)
This alarm code is indicated when the discharge pressure is higher than 2.74 Mpa.
Is alarm activated just after
running?
Is 220-240V the voltage
between connector
PCN203 PIN1 and
connector PCN 203
PIN3 on the Printed
Circuit Board for Relay
(PCB
D
1~6)?
PCB
D
Check
Is alarm activated in 3
minutes after running
operation?
Wiring Check
(breaking of wire,
wrong wiring)
Is high pressure switch
(PSH1~6) activated?
Check clogging
in air side heat
exchanger
High Pressure
Check
Is high pressure
switch (PSH1~6) reset
button activated?
Reset
Cycle Check
Is 220-240V the voltage
between connector
PCN203 PIN1and
connector PCN 203
PIN3 on the Printed
Circuit Board for Relay
(PCB
D
1~6)?
Wiring check
(breaking of wire,
wrong wiring)
Is 220-240V the voltage
between connector PCN203
PIN1 and connector PCN 203
PIN3 on the Printed Circuit Board
for Relay (PCB
D
1~6)?
Wiring Check
Check Printed
Circuit Board for
Relay (PCB
D
1~6)
Check Printed Circuit
Board for Relay ( PCB
D
1~6)
NOTE
:
To check the nominal value for pressure refer to safety and control device setting table to the technical catalogue
Yes
(Activate
immediately)
No (Activate
after a while)
Yes
(PCB is
normal)
Yes
No
No
Yes
No
Yes
No
Yes
Yes
No (Activate a while
after Compressor ON)
No
