Meaning Of Alarm Messages - Sanyo CHDZ07263 Service Manual

6. Meaning of Alarm Messages

6. Meaning of Alarm Messages

Table of Self-Diagnostics Functions and Description of Alarm Displays
Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on
the wired remote controller.
Viewing the LED 1 and 2 (D72 and D75) alarm displays
LED1 LED2
Alternating
( : Blinling) Connect the outdoor maintenance remote controller to the RC socket on the outdoor main unit control PCB (3P,
blue),and check the Alarm Messages on the remote controller display.
Possible cause of malfunction
Remote controller is
Serial
detecting error signal from
communication
indoor unit.
errors
Mis-setting
Indoor unit is detecting error signal from remote controller and system controller.
Indoor unit is detecting error
1
signal from outdoor unit.
Outdoor unit is detecting error
signal from indoor unit.
2
Improper setting
Indoor unit communication
error of group control wiring.
3
During auto. address setting,
number of connected units
does not correspond to
number set.
4
Improper setting
5
Thermistor Indoor unit
6
fault
7
Alarm Display
LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats.
M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm 6: L alarm
N = Alarm No.
Example: LED 1 blinks 2 times, then LED 2 blinks 17 times. The cycle then repeats.
Alarm is "P17".
Error in receiving serial communication signal.
(Auto address is not completed.)
Error in transmitting serial communication signal.
Group wiring failure of indoor units in the refrigerant system
(occurring when remote controller is operated immediately after
automatic address setting)
Error in receiving serial communication signal.
There is an indoor unit which does not send signals when the
power is ON.
Indoor unit address setting is duplicated.
Duplicated remote controller "main" setting.
Starting auto. address setting is prohibited.
AP pin / CN102 is shorted while the auto. address setting started.
Error of main indoor unit in receiving serial communication signal
from sub indoor units.
Number of connected indoor units is less than the number set.
Number of connected indoor units is more than the number set.
No indoor unit is connected.
Main outdoor unit is detecting error signal from sub outdoor unit.
Duplicated outdoor unit address setting.
Mismatch in "No. of outdoor units" setting.
Error of sub outdoor unit in receiving signal from main outdoor unit.
Connected indoor unit is not a multi unit.
Duplication of main indoor unit address setting in group control.
Group control wiring is connected to individual control indoor unit.
Indoor unit address is not set.
Capacity code of indoor unit is not set.
Duplication of outdoor system address setting.
Capacity code of outdoor unit is not set.
Mismatch of outdoor unit type.
Indoor coil temp. sensor (E1)
Indoor coil temp. sensor (E3)
Indoor suction air (room) temp. sensor (TA)
Indoor discharge air temp. sensor (BL)
Alarm contents
1 - 14
Test Run
Alarm
Message
<E01>
<E02>
<<E03>>
E04
E06
<<E08>>
<<E09>>
E12
E18
E15
E16
E20
E24
E25
E26
E29
<<L02>>
<L03>
L07
L08
<<L09>>
L04
L10
L17
<<F01>>
<<F03>>
<<F10>>
<<F11>>
Continued