Chariot Carriers Merci Installation Manual download pdf (Page 40)

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How to check the existing piping settings

You can check whether the existing piping settings are enabled.

1. Check that the LED displays are placed in their initial status. If not, place them in the initial status.

2. Hold down SW01 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 9)

3. Press SW01 four times to set the LED displays (D800 to D805) to the “LED displays for existing piping settings”

shown below. If the setting is enabled, D802 lights and D804 and D805 flash rapidly. (Fig. 10)

4. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial status.

(Fig. 9)

: ON, : OFF, : Slow flashing

(Fig. 10)

: ON, : OFF, : Rapid flashing

When restoring the factory defaults

To restore the factory defaults in situations such as when relocating the units, follow the steps below.

1. Check that the LED displays are placed in their initial status. If not, place them in the initial status.

2. Hold down SW01 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 11)

3. Press SW01 14 times to set the LED displays (D800 to D805) to the “LED displays restored to factory defaults”

shown below. (Fig. 12)

(Fig. 11)

: ON, : OFF, : Slow flashing

(Fig. 12)

: ON, : OFF, : Rapid flashing

4. Hold down SW02 for at least 5 seconds, and check that D804 flashes slowly. (Fig. 13)

5. Hold down SW01 and SW02 simultaneously for at least 5 seconds to return the LED displays to the initial status.

(Fig. 13)

: ON, : OFF, : Slow flashing

LED displays indicated when step 3 is taken

D800 D801 D802 D803 D804 D805

LED displays for existing piping settings

D800 D801 D802 D803 D804 D805

LED displays indicated when step 2 is taken

D800 D801 D802 D803 D804 D805

LED displays restored to factory defaults

D800 D801 D802 D803 D804 D805

LED displays indicated when step 4 is taken

D800 D801 D802 D803 D804 D805

Troubleshooting

You can perform fault diagnosis of the outdoor unit with the LEDs on the P.C. board of the outdoor unit in addition

to using the check codes displayed on the wired remote controller of the indoor unit.

Use the LEDs and check codes for various checks. Details of the check codes displayed on the wired remote

controller of the indoor unit are described in the Installation Manual of the indoor unit.

LED displays and check codes

: ON, : OFF, : Rapid flashing (5 times/sec.)

rorrE.oN

Display

D800 D801 D802 D803 D804 D805

1Normal

2 Discharge temperature sensor (TD) error

3 Heat exchanger temperature sensor (TE) error

4 Heat exchanger temperature sensor (TL) error

5 Outside air temperature sensor (TO) error

6 Suction temperature sensor (TS) error

7 Heat sink temperature sensor (TH) error

8 Heat exchanger sensor (TE, TS) connection error

9 EEPROM error

10 Compressor breakdown

11 Compressor lock

12 Current detection circuit error

13 Case thermostat operation

14 Model data not set

15 Discharge temperature error

16 Power supply error

17 High pressure SW error

18 Heat sink overheating error

19 Ga

s leak detected

20 4-way valve reverse error

21 High pressure release operation

22 Fan system error

23 Drive device short-circuiting

24 Position detection circuit error

25 Compressor IPDU or other (not specifically identified)

* The LEDs and switches are located at the top right of

the P.C. board of the outdoor unit as shown in the

figure on the right.

LED displays

D800 D801 D802 D803 D804 D805

(Yellow) (Yellow) (Yellow) (Yellow) (Yellow) (Green)

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Chariot Carriers Merci Installation Manual Page 40

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