Mitsubishi Heavy Industries FDURA501 User Manual

MULTI-TYPE
PACKAGED AIR-CONDITIONER
(Split system, Air to air heat pump type)
Collection data
Manual No. '04•M-T-089
(OUTDOOR UNIT) (INDOOR UNIT)
FDCA301HEN
301HES
401HEN
401HES
501HES
601HES
801HES
1001HES
FDTA151
201
251
301
401
501
FDENA151
201
251
301
401
501
FDKNA151
201
251
301
FDURA201
251
301
401
501

Mitsubishi Heavy Industries FDURA501 Specifications

General

Brand	Mitsubishi Heavy Industries
Model	FDURA501
Category	Air Conditioner
Language	English

Summary

1.3 Table of models

1.4 Table of system combinations

2 SELECTION DATA

2.1 Specifications

Provides detailed technical specifications for ceiling recessed type (FDT) indoor units.

2.6 Piping system

(1) Twin type

Illustrates refrigerant piping diagrams for twin type outdoor units.

(2) Triple type

Illustrates refrigerant piping diagram for FDCA601HES triple type outdoor unit.

2.7 Selection chart

(1) Coefficient of cooling and heating capacity in relation to temperatures

Provides correction factors for cooling/heating capacity based on indoor/outdoor temperatures.

(3) Correction of cooling and heating capacity in relation to one way length of refrigerant piping

Explains how to adjust capacity based on refrigerant pipe length.

3 ELECTRICAL DATA

3.1 Electrical wiring

Details the electrical wiring diagram for FDT indoor units.

(b) Ceiling suspension type (FDEN)

Shows the electrical wiring diagram for FDEN series indoor units.

(c) Wall mounted type (FDKN)

Presents electrical wiring for FDKN series indoor units.

(d) Ceiling mounted duct type (FDUR)

Details the electrical wiring diagram for FDUR series indoor units.

(2) Outdoor unit

Shows the electrical wiring diagram for FDCA301HEN outdoor units.

4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER

(1) Remote controller

Explains the functions and display of the wired remote controller.

(a) Wired remote controller

Details the wired remote controller's interface and operation.

(b) Wireless remote controller

Describes the functions and display of the wireless remote controller.

(2) Operation control function by the indoor controller

(d) Dehumidifying operation (“THERMAL DRY”)

(e) Timer Operation

(n) Heating overload porotection

(p) Thermistor (Return air, heat exchanger) disconnected wire detection.

(q) Using 1 remote controller to control multiple units (indoor units - up to 16 units)

Explains how to use one remote controller for group control of multiple indoor units.

1) Function

4) Error

(3) Operation control function by the wired remote controller

(4) Operation control function by the outdoor controller

(a) Compressor Starting Control (FDCA801, 1001 models only)

(b) Outdoor fan control

Explains outdoor fan speed control based on temperature for various models.

(d) Defrosting

1) Defrosting start conditions

Lists the conditions required for initiating defrosting operation.

3) Defrosting end conditions

(e) Compressor protection control

(i) Compressor overcurrent protection

Details protection mechanisms against compressor overcurrent.

(v) High pressure control

1) Heating

Explains high pressure control logic during heating operation.

2) Cooling

Describes high pressure control logic during cooling operation.

3) High pressure abnormal

Covers abnormal conditions related to high pressure.

1) High pressure control during heating

Specific high pressure control during heating for FDCA801/1001.

2) Abnormality detection control using the high pressure switch (63H1)

Details abnormality detection using the high pressure switch.

3) Abnormal high pressure control using the outdoor heat exchanger temperature (Tho-R1, R2)

High pressure control based on outdoor heat exchanger temperature.

(vi) Abnormal low pressure detection control (FDCA801, 1001 only)

(f) Detection of disconnected wires in temperature thermistors (outdoor heat exchanger, outside air temperature, discharge pipe, suction pipe, under-dome) and low pressure sensor.

1) Outdoor heat exchanger temperature thermistor, outside air temperature thermistor and low pressure sensor

Details detection of issues with these specific thermistors and sensor.

2) Discharge pipe temperature thermistor, suction pipe temperature thermistor, under-dome temperature thermistor

Covers detection of problems with discharge, suction, and under-dome thermistors.

(g) Insufficient refrigerant protection control

(h) Low voltage protection control

(o) Test operation

5.1 Installation of indoor unit

(1) Ceiling recessed type (FDT)

Provides installation guidelines for FDT indoor units.

(b) Installation space for unit

(c) Suspension

(d) Drain Piping

Provides instructions for drain hose and piping installation.

(2) Ceiling suspension type (FDEN)

(b) Wireless remote control unit operation distance

(d) Installation

(e) Refrigerant Piping

1) Piping Position

Guides on the correct positioning of refrigerant pipes.

2) Piping Connection Position

Details how to connect refrigerant pipes, including cutting margins.

(f) Drain Piping

Provides instructions for drain piping installation.

(3) Wall mounted type (FDKN)

(f) Installation of unit

(g) Drain piping

(4) Ceiling mounted duct type (FDUR)

(a) Selection of installation location

(c) Installation of indoor unit

1) Adjusting the unit’s levelness

2) Blower fan switching. (When the high performance filter is used.)

(b) Installation procedure

(a) Selecting the installation location

(2) Refrigerant piping work

(a) Decision of piping specification

(i) Twin type

Illustrates piping specifications and parts for twin type systems.

(iii) Double twin type

Illustrates piping specifications and parts for double twin type systems.

(b) Flare processing

Explains the process for flaring refrigerant pipes for R410A.

(d) Refrigerant pipe connection (Models FDCA 301~601 only)

(3) Air tightness test and air purge

(a) Air tightness test

Explains the procedure for conducting an air tightness test on the system.

(b) Air purge

Details the process of purging air from the refrigerant system.

(4) Refrigerant charge

(a) The outdoor unit is charged with enough refrigerant...

(b) If the system’s piping exceeds 30 m...

(5) Heating and condensation prevention

(6) Drain piping work (Models FDCA301~601 only)

(7) Electrical wiring

(a) Selection of size of power supply and interconnecting wires.

(b) Wiring connection.

Details how to connect indoor, outdoor, and remote controller wiring.

(c) Plural Master / Slave setting

(d) Remote controller wiring and connection procedure

(8) Setting functions using the remote controller

(a) The default settings of this unit's functions are as follows: If you want to charge a setting, follow the procedure found in the installation manual and set to your desired setting.

(b) Function setting method

(d) Changing the remote controller’s temperature setting range

(9) Test run

(a) Carry out test operation from outdoor units.

(b) Trial operation from a remote controller

(10) Checking Operation Data

6 MAINTENANCE DATA

6.1 Evacuation

Explains the procedure for evacuating the refrigerant system using a vacuum pump.

(2) Refrigerant charging

Details the process of charging refrigerant into the system.

6.2 Trouble shooting for refrigerant circuit

Guides on diagnosing refrigerant circuit issues using pressure and temperature data.

6.3 Diagnosing of microcomputer circuit

Explains self-diagnosis features, error codes, and LED indicators for fault identification.

Selfdiagnosis Function and Error Display

Explains self-diagnosis features, error codes, and LED indicators for fault identification.

Trouble Diagnosis Procedures

● Control change switch (SW5, SW9, SW10)

1 Error display : e5 [Communications error during operation]

2 Error display : e32 [Power supply phases reversed]

3 Error display : e33 [Compressor overcurrent trouble]

4 Error display : e34 [Open phase at L3 phase of 52C secondary side]

5 Error display : e35 [Cooling overload operation]

6 Error display : e36 [Discharge temperature error]

7 Error display : e37 [Defective outdoor unit heat exchanger thermistor]

8 Error display : e38 [Defective outdoor air temperature thermistor]

9 Error display : e39 [Defective discharge pipe thermistor]

10 Error display : e40 [63H1 operation]

11 Error display : e49 [Abnormal low pressure or low pressure sensor wire disconnected]

12 Error display : e52 [52C Abnormal]

13 Error display : e53 [Defective suction pipe thermistor]

14 Error display : e54 [Defective low pressure and high pressure sensor]

15 Error display : e55 [Defective under-doom thermistor]

16 Error display : e57 [Insufficient refrigerant volume.]

(4) Error diagnosis procedures at the outdoor units side

(a) Replacement parts assembly related to the outdoor unit controller

(b) Replacement procedure of outdoor unit microcomputer printed circuit board.

● Function of DIP switches (SW3, SW4, SW5) (Usually all turned OFF)

(d) How to advance checks for each faulty symptom

(i) Inspection method when there is no error display

3) Four way valve does not switch during heating operation

(5) Check abnormal operation data with the remote controller

6.4 Check display on wireless specification models (FDEN · FDKN)

(4) Wireless remote controller

(5) Attachment of wireless kit

3) Attachment of wireless kit

(6) Control of a plural number of indoor units with one remote controller

(a) Up to 16 indoor units can be connected.

(b) Wireless remote controller operation distance