Explanation Of Alarm Messages - Sanyo SPW-C483GYH8 Service Manual

1. Troubleshooting

1-3. Explanation of Alarm Messages

Possible Cause of Malfunction
• Serial
commu-
nication
errors
• Mis-setting
• Error of the indoor unit in transmitting serial communications signal to
3
Activation of
protective
device
Oxygen sensor (field supply) is activated.
NOTE
RCU : Remote Control Unit (remote controller)
R.C. : Refrigerant Circuit
PC : Power Control
AC : Standard
comp. : Compressor
temp. : Temperature
PCB : Printed Circuit Board
Remote controller is detecting
error signal from indoor unit.
• Indoor unit is detecting error signal from the remote controller.
(No serial communications signal)
Indoor unit is detecting error
signal from outdoor unit.
Outdoor unit is detecting error
signal from indoor unit.
Indoor unit is not working
correctly.
Outdoor unit is transmitting error
signal.
Improper setting of indoor unit or
remote controller.
remote controller.
When using group control, main indoor unit address setting is duplicated.
(For single heat pump type.)
Error in Auto. address setting.
(No. or capacity of judged indoor unit is small.)
Error in Auto. address setting.
(No. or capacity of judged indoor unit is large.)
Indoor unit is transmitting error signal to another indoor unit.
Indoor unit is detecting error signal from another indoor unit.
Protective device in indoor unit
is activated.
Protective device in outdoor
unit is activated.
Protective device in indoor unit
is activated.
Error in receiving serial communications signal.
Error in transmitting serial communications signal.
Error in receiving serial communications signal.
Error in transmitting serial communications signal.
Error in receiving serial communications signal.
• Indoor unit is damaged.
• Power is not supplied.
Error in transmitting serial communications signal.
Indoor unit address setting is duplicated.
Remote controller address (RCU.ADR) switch is duplicated.
Do not press Auto. address button S001: (A. ADD) of another
R.C. line during Auto. address operation.
• Thermal protector in indoor fan motor is activated.
• Thermal protector in outdoor fan motor is activated.
• PC or AC Compressor thermal protector is activated.
• Power supply voltage is unusual. (The voltage is more than
260 V or less than 160 V between L and N phase.)
Incorrect discharge gas temp. of PC comp.
High-pressure switch is activated.
Incorrect power supply voltage . Negative phase, defective
phase or voltage drop.
Incorrect discharge gas temp. of AC comp.
Improper wiring connections of ceiling panel.
Float switch is activated.
III - 8
Service Procedures
Alarm
message
E1
E2
E3
E4
E5
E6
E7
E8
E9
E12
E13
E14
E15
E16
E17
E18
P1
P2
P3
P4
P5
P17
P9
P10
P14
SM830052