07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 82

8-7. 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

LED 1

 

LED 2

 

Alarm contents

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Alarm display

 

 

 

 

 

 

Alternating

 

 

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."

 

 

 

 

 

 

 

 

 

 

( : Blinking)

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

 

 

Alarm

 

 

 

message

 

Serial

 

 

Remote controller is detecting

Error in receiving serial communication signal.

 

 

 

 

communication

 

error signal from indoor unit.

(Signal from main indoor unit in case of group control)

<E01>

 

errors

 

 

 

 

Ex: Auto address is not completed.

 

 

 

 

Mis-setting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error in transmitting serial communication signal.

<E02>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit is detecting error signal from remote controller (and system controller).

<<E03>>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit is detecting error

Error in receiving serial communication signal.

 

 

 

 

 

 

 

 

signal from main outdoor unit.

When turning on the power supply, the number of connected

E04

 

 

 

 

 

 

 

indoor units does not correspond to the number set. (Except R.C.

 

 

 

 

 

 

 

 

 

 

address is “0.”)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error of the main outdoor unit in receiving serial communication

<E06>

 

 

 

 

 

 

 

 

signal from the indoor unit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Improper setting of indoor unit or

Indoor unit address setting is duplicated.

E08

 

 

 

 

 

remote controller.

 

 

 

 

 

 

 

 

 

 

Remote controller address connector (RCU. ADR) is duplicated.

<<E09>>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Duplication of main remote controller)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

During auto address setting,

Starting auto address setting is prohibited.

 

 

 

 

 

 

 

 

number of connected units does

This alarm message shows that the auto address connector CN100

E12

 

 

 

 

 

not correspond to number set.

is shorted while other RC line is executing auto address operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error in auto address setting. (Number of connected indoor units

E15

 

 

 

 

 

 

 

 

is less than the number set.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When turning on the power

Error in auto address setting. (Number of connected indoor units

E16

 

 

 

 

 

 

supply, number of connected

is more than the number set.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

units does not correspond to

No indoor unit is connected during auto address setting.

E20

 

 

 

 

 

 

number set.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Main outdoor unit is detecting error signal from sub outdoor unit.

E24

 

 

 

 

 

 

(Except R.C. address is “0.”)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error of outdoor unit address setting.

E25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The number of connected main and sub outdoor units do not

E26

 

 

 

 

 

 

 

 

correspond to the number set at main outdoor unit PCB.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error of sub outdoor unit in receiving serial communication signal

E29

 

 

 

 

 

 

 

 

from main outdoor unit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit communication error

Error of main indoor unit in receiving serial communication signal

E18

 

 

 

 

 

 

of group control wiring.

from sub indoor units.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Improper setting.

This alarm message shows when an indoor unit for multiple-use

L02

 

 

 

 

 

 

 

 

is not connected to the outdoor unit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Duplication of main indoor unit address setting in group control.

<L03>

 

 

 

 

 

 

 

Duplication of outdoor R.C. address setting.

L04

 

 

 

 

 

 

 

There are 2 or more indoor unit

Priority set remote controller

L05

 

 

 

 

 

 

 

controllers that have operation

 

 

 

 

 

 

 

 

 

 

 

Non-priority set remote controller

L06

 

 

 

 

 

 

 

 

mode priority in refrigerant circuit.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Group control wiring is connected to individual control indoor unit.

L07

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Indoor unit address is not set.

 

L08

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Capacity code of indoor unit is not set.

<<L09>>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Capacity code of outdoor unit is not set.

L10

 

 

 

 

 

 

 

Mis-matched connection of outdoor units that have different kinds

L17

 

 

 

 

 

 

 

 

of refrigerant.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4-way valve operation failure

 

L18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Continued

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Sanyo 85464359982001 installation instructions Alarm contents, Possible cause of malfunction