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8 Troubleshooting
8.2.3 Troubleshooting by alarm code for the outdoor and indoor units
01
Alarm code
-
This alarm code is displayed when the contact between #1 and #2 of CN14 is not closed over 120 seconds during
the cooling process, the heating process or the fan operation.
Is DC12V applied
between #2 of CN14 and
Faulty IU PCB
If all the above checks have been overcome, see the status
of the following item:
•
Check if float switch (FS) connected to the CN14 is
open/activated by using a tester.
Phenomenon
High Drain Level
Activation of the float
switch
Faulty float switch
Faulty indoor unit PCB (except RPC)
Faulty wiring (RPC only)
N O T E
•
*1): Refer to section
"Self-checking procedure of PCB by means of the Remote Control Switch"
219
SMGB0087 rev.0 - 12/2013
Activation of the safety device (flow switch) in the indoor unit (except RPK series)
No
GND?
Yes
Cause
Clogging of the drainage
Fault
Faulty contacting
Faulty connection
Activation of float switch
(FS) or incorrect wiring
Indication of outdoor unit PCB
Indication of Outdoor Unit PCB
Alarm code
Alarm Code
Indoor unit number
Indoor Unit No.
for malfunction
for Malfunction
CN14: Safety devices line scheme
Check item
Remove the clogged
Check the drain pan
foreign particles
Check the continuity
Replace the float switch
when the drain level is
if faulty
low
Measure the resistance
Fix the looseness and
by means of the tester
Replace the connector
Check the connections
Repair the connection
Check PCB by means of
Replace PCB if faulty
the self-check mode *1)
Check wheather short-
circuited connector is
Connect it correctly
connected to CN-14)
8
Action
(Turn OFF the main
switch)
in this chapter.
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Troubleshooting
