Thursday 20 December 2018

Mitsubishi Heavy Industries Air Conditioning Fault Codes For PAC Multi Indoor and Outdoor systems V, VD, VF, VF/1, VG






PAC SELF-DIAGNOSIS INFORMATION

Inverter PAC
Indoor Units
FDT
V, VD, VF, VF/1, VG
FDTC
V, VD, VF, VF/1,
FDU
VF, VF/1, VG
FDUM
1, 1R, V, VD, VF, VF/1
FDE
VG
FDEN
V, VD, VF, VF/1
FDF
VD
Error Code
Indoor PCB LEDs
Outdoor unit LEDs
Description of Fault
Possible Cause

RED

GREEN (1)

RED

GREEN (1)

No Error Code

Off

Flashing

Off

Flashing

-

Normal Operation

Off

Off

2x

Off

Indoor unit power supply
Power OFF, broken wire, blown fuse, broken transformer wire

3x

Flashing

Off

Flashing

Remote controller wires

Poor or wrong connection, broken wire

Remote controller

Faulty Remote controller

"W AIT" or "INSPECT I/U"

Off

Flashing

2x

Flashing
Communication error (indoor-outdoor)

Faulty interconnect wiring, faulty PCB

Remote Controller
Improper setting of master and slav e by Remote Controller

E1

Off

Flashing

Off

Flashing
Communication error (indoor-remote control)
Poor or wrong connection, broken wire, intrusion of noise, faulty indoor PCB or

E5

2x

Flashing

2x

Flashing
Indoor - Outdoor communication fault
Poor connection, incorrect wiring, indoor or outdoor PCB

2x

Flashing

Off

Flashing

Electrical Noise

CPU Runaway on Outdoor control PCB

Outdoor Control PCB
Faulty Outdoor Control PCB (Communication Circuit)

2x

Flashing

Off

Off

Outdoor Control PCB

Faulty Outdoor Control PCB or Power supply

E6

1x

Flashing

Off

Flashing
Indoor heat exchanger temp sensor
Faulty sensor, poor connection, faulty indoor PCB

E7

1x

Flashing

Off

Flashing
Indoor return air temp sensor
Faulty sensor, poor connection, faulty indoor PCB

E8

1x

Flashing

Off

Flashing
Indoor heat exchanger temp sensor
Heating ov erload, faulty sensor, faulty indoor PCB

E9

1x

Flashing

Off

Flashing

Float switch activ ated
Blocked drain, faulty pump, faulty indoor PCB, faulty float switch

E10

Off

Flashing

Off

Flashing
No. of indoor units connected
Too many units connected to 1 controller (MAX 16)

E14

3x

Flashing

Off

Flashing

Remote controller Fault
No master assigned to slav es, incorrect wiring, broken wire between master &

E16

1x

Flashing

Off

Flashing

Indoor fan motor
Faulty Indoor fan motor, poor connection, faulty indoor PCB

E18

1x

Flashing

Off

Flashing

Address S etting Error
Address setting error of master and slav e indoor units

E19

1x

Flashing

Off

Flashing

Mode Setting

Incorrect mode setting

E20

1x

Flashing

Off

Flashing

Indoor fan motor
Fan motor speed fault or faulty indoor Power PCB

E21

1x

Flashing

Off

Flashing

Panel Limit S witch error
Defectiv e limit switch, air inlet panel set, I/D control PCB

E28

Off

Flashing

Off

Flashing
Remote Controller temp sensor

Faulty Remote controller temp sensor





Technical Sales And Spares


Tel: +44 (0)845 567 70 80

Fax: +44 (0)1234 780148



Skype: orionairsales
Orion Air Conditioning & Refrigeration Ltd
10 Grisedale Court,
Woburn Road Ind. Est.
Kempston,
Bedfordshire,
MK42 7EE,
United Kingdom

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