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Troubleshooting by Indication on the Remote Controller
SiUS28-902_a
95
Troubleshooting
3.8
“
AJ
” Indoor Unit: Malfunction of Capacity Determination
Device
Remote
controller display
AJ
Applicable
Models
All indoor unit models
Method of
Malfunction
Detection
Capacity is determined according to resistance of the capacity setting adaptor and the memory
inside the IC memory on the indoor unit P.C.B., and whether the value is normal or abnormal is
determined.
Malfunction
Decision
Conditions
Operation and:
1. When the capacity code is not contained in the P.C.B.’s memory, and the capacity setting
adaptor is not connected.
2. When a capacity that doesn’t exist for that unit is set.
Supposed
Causes
You have forgotten to install the capacity setting adaptor.
Defect of indoor unit P.C.B.
Troubleshooting
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
the connector, or parts co
u
ld
b
e damaged.
Install a capacity setting adaptor.
Replace the indoor
u
nit P.C.B.
N
O
N
O
YES
YES
Replace the indoor
u
nit P.C.B.
The indoor
u
nit P.C.B.
w
as replaced
w
ith a replacement
P.C.B.
The indoor
u
nit is a model that
re
qu
ires installation of a
capacity setting adaptor
w
hen replacing the
P.C.B.
Summary of Contents for SkyAir FCQ18PVJU
Page 1: ...Split System Air Conditioners SkyAir Inverter R 410A Heat Pump 60Hz P Series SiUS28 902_a...
Page 44: ...Other Control SiUS28 902_a 37 Function...
Page 81: ...SiUS28 902_a Troubleshooting by Remote Controller Troubleshooting 74...
Page 185: ...SiUS28 902 Precautions for New Refrigerant R 410A Precautions for New Refrigerant R 410A 178...