SiUS30-1301
Troubleshooting by Indication on the Remote Controller
Service Diagnosis
179
3.17 PCB Abnormality
Error Code
E1
Applicable
Models
RWEYQ72P, 84P
Method of Error
Detection
Abnormality is detected under the communication conditions in the hardware section between the
indoor unit and condensing
unit.
Error Decision
Conditions
When the communication conditions in the hardware section between the indoor unit and the
condensing unit are not normal.
Supposed
Causes
Defective condensing unit PCB (A1P)
Defective connection of inside / condensing relay wires
Troubleshooting
Ret
u
rn to normal?
Caution
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
Check if
inside / condensing
relay
w
ires of condensing
u
nit main PCB are
disconnected.
T
u
rn OFF the po
w
er s
u
pply
once and then t
u
rn it O
N
again.
External factor other than
error (for example, noise
etc.).
YES
N
O
Replace the condensing
u
nit main PCB (A1P).
N
O
Connect the inside /
condensing relay
w
ires
correctly.
YES