McQuay M5MAC Instrukcja Naprawy Pobierz pdf (Strona 76)

McQuay Service Guide Book

Wall Mounted K-Series Inverter-Y model

Model Board Handset

5WMY 010/015 KR

2P206569-4

APJ1

Indoor LED Indication

The operation lamp flashes when any of the following errors is detected.

1. When a protection device of the indoor or outdoor unit is activated or when the thermistor

malfunctions, disabling equipment operation.

2. When a signal transmission error occurs between the indoor and outdoor units.

Error code diagnosis conducted by Wireless Handset APJ1

The wireless handset can receive a corresponding error code from the indoor unit.

1. When is held down for 5 seconds, a indication blinks on the temperature display

section.

2. Press repeatedly until a continuously beep is produced.

The code indication changes in the sequence shown below, and notifies with a long beep.

CATEGORY

CODE DESCRIPTION

00 NORMAL

UA INDOOR-OUTDOOR UNIT COMBINATION FAULT

U0 REFRIGERANT SHORTAGE

U2 DROP VOLTAGE OR MAIN CIRCUIT OVERVOLTAGE

SYSTEM

FAILURE OF TRANSMISSION (BETWEEN INDOOR UNIT AND OUTDOOR

UNIT)

A1 INDOOR PCB DEFECTIVENESS

A5 HIGH PRESSURE CONTROL OR FREEZE-UP PROTECTOR

A6 FAN MOTOR FAULT

C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR

INDOOR

UNIT

C9 FAULTY SUCTION AIR TEMPERATURE SENSOR

1 2 ... 71 72 73 74 75 76 77 78 79 80 81 ... 89 90

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McQuay M5MAC Instrukcja Naprawy Strona 76