McQuay MDS300B Manuel de service

SM-MDS_(i) Service Manual MMuullttii DDiiggiittaall SSccrroollll SSyysstteemmEngineered for flexibility and performance TM

4 Service Manual SM-MDS_(i) 1.5 Maximum Piping Length The presence of sub-cooling circuit with

94 Service Manual SM-MDS_(i) 7.5 Temperature Sensor Resistance Value Remark: Exclude discharge

Service Manual SM-MDS_(i) 95 7.6 Hardware Configuration for 5MDS Outdoor Remark: The marked wire should be connected only f

96 Service Manual SM-MDS_(i) 7.7 R22 MDS-A Series Cooling Cycle Reference 7

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98 Service Manual SM-MDS_(i) 7.8 R22 MDS B Series Cooling Cycle Reference 7

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102 Service Manual SM-MDS_(i) 7.9 R22 MDS A Series Heating Cycle Reference 7

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Service Manual SM-MDS_(i) 5 Dimension of refnet model MDS-Y5-A, MDS-Y6-A and MDS-Y7-A Distributor MDS-C1 Distributor MDS-C2 a

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Service Manual SM-MDS_(i) 105 7.10 R22 MDS B Series Heating Cycle Reference 7

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Service Manual SM-MDS_(i) 109 7.11 R410A MDS B Series Cooling Cycle Reference 7

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6 Service Manual SM-MDS_(i) 1.7 EXV Box (MEX) For MDS system, every indoor has an individual E

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116 Service Manual SM-MDS_(i) 7.12 R410A MDS B Series Heating Cycle Reference 7

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Service Manual SM-MDS_(i) 123 7.13 Refrigerant Circuit Diagram MDS 30/40/50/60A MDS 70A 7

Service Manual SM-MDS_(i) 7 2.1 MDS Outdoor System and Control General Circuit Diagram General outdoor circuit diagram for coo

124 Service Manual SM-MDS_(i) MDS 30/40/50/60AR MDS 70AR 7

Service Manual SM-MDS_(i) 125 MDS 80/100/120B MDS 80/100/120BR 7

126 Service Manual SM-MDS_(i) MDS 150B MDS 150BR 7

Service Manual SM-MDS_(i) 127 MDS 180B MDS 180BR 7

128 Service Manual SM-MDS_(i) MDS 200/220/240B MDS 200/220/240BR 7

Service Manual SM-MDS_(i) 129 MDS 260B 7

130 Service Manual SM-MDS_(i) MDS 260BR 7

Service Manual SM-MDS_(i) 131 MDS 280/300/320B 7

132 Service Manual SM-MDS_(i) MDS 280/300/320BR 7

Service Manual SM-MDS_(i) 133 5MDS 50/60/70B 5MDS 50/60/70BR 7

8 Service Manual SM-MDS_(i) Piping and Components Layout General layout of MDS system piping

134 Service Manual SM-MDS_(i) 5MDS 80/100/120B 5MDS 80/100/120BR 7

Service Manual SM-MDS_(i) 135 5MDS 140/160/180B 5MDS 140/160/180BR 7

136 Service Manual SM-MDS_(i) 5MDS 200/220/240B 5MDS 200/220/240BR 7

Service Manual SM-MDS_(i) 137 5MDS 260/280/300B 7

138 Service Manual SM-MDS_(i) 5MDS 260/280/300BR 7

Service Manual SM-MDS_(i) 139 5MDS 320/340/360B 7

140 Service Manual SM-MDS_(i) 5MDS 320/340/360BR 7

Service Manual SM-MDS_(i) 141 5MDS 380/400/420B 7

142 Service Manual SM-MDS_(i) 5MDS 380/400/420BR 7

Service Manual SM-MDS_(i) 143 5MDS 440/460/480/500B 7

Service Manual SM-MDS_(i) 9 Fan Speed Control Outdoor fan speed control (cooling mode) Outdoor fan speed control (heating mod

144 Service Manual SM-MDS_(i) 5MDS 440/460/480/500BR 7

© 2011 McQuay International www.mcquayup.com Products manufactured in an ISO certified facility. This document contains the most current product in

10 Service Manual SM-MDS_(i) 2.2 MDS Indoor System and Control Sensor Location Indoor coil

Service Manual SM-MDS_(i) 11 2.3 MDS System Piping Connection MDS system provides multiple indoor unit installation through refne

12 Service Manual SM-MDS_(i) 2.4 Heater Control There is an optional heater for MDS indoor uni

Service Manual SM-MDS_(i) 13 2.5 Outdoor Ball Valve Operation Other than installer, service personnel are often required to ope

14 Service Manual SM-MDS_(i) 3.1 MDS Outdoor Unit PCB There are two types of PCB for MDS outdo

Service Manual SM-MDS_(i) 15 MDS-M PCB Remark: No No 1 7 Segment LED Display 14FX1-OL - Fix compressor

16 Service Manual SM-MDS_(i) 3.2 MDS Indoor Unit PCB There are two types of PCB for MDS indoor

Service Manual SM-MDS_(i) 17 MC201-C Remark: No No 1 Steping Motor 11 Dipswitch 3 (SW3) 2 EXV2 12 D

18 Service Manual SM-MDS_(i) 3.3 MDS System Wiring The wiring for MDS is very critical as MDS

Service Manual SM-MDS_(i) 19 MDOM PCB For MDOM PCB, the communication terminals are already wired from the PCB to terminal block

20 Service Manual SM-MDS_(i) For the last indoor unit, the communication jumper needs to be sho

Service Manual SM-MDS_(i) 21 3.3.3 Wiring Connection Between MDS Master and Slave Unit For master & slave model, the commun

22 Service Manual SM-MDS_(i) 3.4.1 Wireless Handset G17 1. Transmission Source 2. Signal Tran

Service Manual SM-MDS_(i) 23 10. “ON/OFF” Button 11. Timer Cancel 12. OFF Timer Setting 13. ON Timer Setting 14. Turbo Functio

Service Manual SM-MDS_(i) i The data and suggestions in this document are believed current and accurate

24 Service Manual SM-MDS_(i) 3.4.2 Wired Controller MC301 1. ON/OFF Operation • Press “ON/

Service Manual SM-MDS_(i) 25 9. Real Time Clock Setting • Press “CLK” to enter, firstly is “week setting”; press “▲” or “▼” to ch

26 Service Manual SM-MDS_(i) 3.4.3 Central Controller MC303 1. Address Register • After com

Service Manual SM-MDS_(i) 27 8. Swing Setting • Press “SWING” key to active swing function. “SWING” will display on LCD. 9. Slee

28 Service Manual SM-MDS_(i) 3.4.4 Handsets Wiring For Central Controller MC303, wiring work i

Service Manual SM-MDS_(i) 29 4.1 Introduction Smart Commander is the MDS software use to perform commissioning and troubleshooti

30 Service Manual SM-MDS_(i) To set up the USB Dongle Key driver, the user is required to init

Service Manual SM-MDS_(i) 31 4.4 Wiring Connection MC501 gateway acts as a bridge in converting and transmitting signals and allo

32 Service Manual SM-MDS_(i) Wiring connection for MDS system with more than one outdoor unit

Service Manual SM-MDS_(i) 33 4.5 Setup of Smart Commander After completing the wiring connection for MC501 gateway, setup process

ii Service Manual SM-MDS_(i) Table of Content Preface…………………………………………………………………………..…………………….iv

34 Service Manual SM-MDS_(i) Step 4 A new window will prompt out, showing the list of hardwar

Service Manual SM-MDS_(i) 35 Step 6 Go to Start, ALL Programs, Smart Commander, Smart Commander_EN to launch the Smart Commander

36 Service Manual SM-MDS_(i) Step 9 After the setting of COM port is completed, the user can

Service Manual SM-MDS_(i) 37 4.6 Smart Commander Software Interface Smart Commander Service version has two different windows. Th

38 Service Manual SM-MDS_(i) i) Outdoor Unit Monitoring Items that can be monitor on an outdo

Service Manual SM-MDS_(i) 39 ii) Outdoor Refrigerant Diagram This allows the user to understand the refrigerant circuit withi

40 Service Manual SM-MDS_(i) Take note that only 8 indoor units can be shown in the circui

Service Manual SM-MDS_(i) 41 4.6.2 Service Monitor Service monitor interface is used to plot graph by using the MDS system paramet

42 Service Manual SM-MDS_(i) 4.6.3 Additional Function Unit setting may be modified by clickin

Service Manual SM-MDS_(i) 43 • Defrost Finish Temperature: The defrost cycle will stop once TH9 exceed this set point. The lower

Service Manual SM-MDS_(i) iii 5.0 Commissioning……………………………………………………………………………………45 5.1 Obtain Design Drawing and Report…………………………

44 Service Manual SM-MDS_(i) • Connection Param 1: Not applicable (for future provision).

Service Manual SM-MDS_(i) 45 In order to commission MDS, there are some necessary steps to follow. These steps help to streamline

46 Service Manual SM-MDS_(i) 5.1 Obtain Design Drawing and Report During the design of MDS sys

Service Manual SM-MDS_(i) 47 5.3 Add in additional refrigerant Even though the MDS outdoor unit is pre-charged with refrigerant f

48 Service Manual SM-MDS_(i) 5.4 Confirm Indoor Dipswitch Setting For MDS system, every unit i

Service Manual SM-MDS_(i) 49 Dipswitch 2 (SW2) 1 2 3 4 5 6 ON (1)OFF (0)Address S21 2 3 4 5 6 ON

50 Service Manual SM-MDS_(i) Dipswitch 3 (SW3) 1 2 3 4 5 6 7 8ON (1)OFF (0)

Service Manual SM-MDS_(i) 51 Auto-Random Restart for Wired Controller (MC301) ON – °FOFF – °CONOFFON– Auto restart ONOFF – Aut

52 Service Manual SM-MDS_(i) 5.6 Confirm Outdoor Dipswitch Setting Similar to indoor, there ar

Service Manual SM-MDS_(i) 53 Set up Dipswitch 2 (J2) For dipswitch 2, there are 2 main functions. The first will be the type o

iv Service Manual SM-MDS_(i) Preface This manual provides a guideline for service personnel to

54 Service Manual SM-MDS_(i) Set up Indoor Quantity To set up indoor quantity, you will need

Service Manual SM-MDS_(i) 55 5.6.2 Setting Up MDS-M PCB Setting up MDS-M PCB is simpler and requires 3 steps as well: 1. Set up

56 Service Manual SM-MDS_(i) Set up Dipswitch 2 (S2) S21 2 3 4 5 6 7 8Master /

Service Manual SM-MDS_(i) 57 Set up Dipswitch 3 (S3) ON (1)OFF (0)S31 2 3 4Outdoor unit capacityON (1)OFF (0)S31

58 Service Manual SM-MDS_(i) If commissioning software is not available, commissioner may manua

Service Manual SM-MDS_(i) 59 5.8 Start All Indoors After confirming that the MDS system is ready in standby mode without any faul

60 Service Manual SM-MDS_(i) 6.1 Locating Error Code Error code will show on both indoor and o

Service Manual SM-MDS_(i) 61 6.2 Error Code for Decorative Type Indoor Page Cool/Heat Sleep/Fan Dry/Timer BLINKING OFF OFF Co

62 Service Manual SM-MDS_(i) Cool/Heat Sleep/Fan Time/Dry BLINKING OFF BLINKING High/low pr

Service Manual SM-MDS_(i) 63 6.3 Indoor Error Code for Wired Controller MC301 Error Code Description Possible Causes Page E0 Sy

Service Manual SM-MDS_(i) 1 1.1 Digital Scroll Compressor MDS system is utilizing the digital scroll compressor technology to mod

64 Service Manual SM-MDS_(i) EC TH12 open/short circuit (suction) • Outdoor suction temper

Service Manual SM-MDS_(i) 65 FE Master unit and slave unit communication malfunction • Master unit and slave unit communicat

66 Service Manual SM-MDS_(i) L2 Low pressure sensor broken • Low pressure sensor connecti

Service Manual SM-MDS_(i) 67 27 Ambient temperature is out of operation limit range (slave unit) • Ambient temperature is ou

68 Service Manual SM-MDS_(i) 6.4 Outdoor Error Code for MDOM PCB Error Code Description Possib

Service Manual SM-MDS_(i) 69 E8 General system failure • High pressure malfunction occur 3 times within 1 hour - outdoor uni

70 Service Manual SM-MDS_(i) 6.5 Outdoor Error Code for MDS-M PCB Error Code Description Possi

Service Manual SM-MDS_(i) 71 ER55 System error • High pressure malfunction occur 3 times within 1 hour - outdoor unit motor

72 Service Manual SM-MDS_(i) ER63 Slave outdoor unit communication failure • Master and sl

Service Manual SM-MDS_(i) 73 6.6 Troubleshooting Flow Chart Indoor/outdoor sensor failure Error code: Decorative Error code #2 an

2 Service Manual SM-MDS_(i) Digital Scroll Compressor Fix Scroll Compressor Digital Scroll

74 Service Manual SM-MDS_(i) Outdoor pressure sensor error Error Code: Decorative Error code #5

Service Manual SM-MDS_(i) 75 Indoor pump error Error Code: Decorative Error code #3, FB (For MC301) Replac

76 Service Manual SM-MDS_(i) Communication error Error Code: Decorative Error code #1, FC, L3

Service Manual SM-MDS_(i) 77 Compressor overload Error Code: Decorative Error code #7, H0 to H3, 30 to 33 (For MC301), H2 to H3 (F

78 Service Manual SM-MDS_(i) High/low pressure switch trip error Error Code: Decorative Error c

Service Manual SM-MDS_(i) 79 Master unit and slave unit communication error Error Code: FE (For MC301), ER63 (For MDS-M PCB)

80 Service Manual SM-MDS_(i) System malfunction error Error Code: Decorative Error code #8, E0,

Service Manual SM-MDS_(i) 81 Measure compressor running amp. Within spec ? Change compress

82 Service Manual SM-MDS_(i) Outdoor storage malfunction Error Code: F0, 20 (For MC301), ER54 (

Service Manual SM-MDS_(i) 83 Indoor and controller communication error Error Code: F6 (For MC301)

Service Manual SM-MDS_(i) 3 1.3 Basic Layout of MDS System Generally, MDS system consists of outdoor unit, indoor unit, refnet

84 Service Manual SM-MDS_(i) Ambient temperature beyond limit Error Code: F7, 27 (For MC301), E

Service Manual SM-MDS_(i) 85 Wired controller storage problem Error Code: FA (For MC301) Press the reset butto

86 Service Manual SM-MDS_(i) Superheat protecting value too small Error Code: L0, 40 (For MC301

Service Manual SM-MDS_(i) 87 Emergency Run Error Code: EF, 1F (For MC301), ER60 (For MDS-M PCB)

88 Service Manual SM-MDS_(i) Wrong Hardware and Software combination Error Code: R22 (For MDS-M

Service Manual SM-MDS_(i) 89 PCB Setting Error Error Code: ERSE (For MDS-M PCB)

90 Service Manual SM-MDS_(i) 7.1 Compatibility Chart for Indoor and Outdoor PCB MDOM PCB (Outd

Service Manual SM-MDS_(i) 91 Remark: 1. Only replace existing PCB with same or newer software version PCB. 2. When replacing ou

92 Service Manual SM-MDS_(i) 7.3 Pressure Sensor Voltage and Resistance Value High pressure se

Service Manual SM-MDS_(i) 93 Low pressure sensor 7.4 Character Reference for 7 Segment LED 7