Mitsubishi Heavy Industries SCM50ZS-S1 - Troubleshooting Procedure (if the Air-Conditioner Runs)

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(4) Troubleshooting procedure (If the air-conditioner runs)

YES

196.

197−203.

195

'18 • SCM-T-251

Main Page

Table of Contents3
Outdoor Units9
Specifications9
Exterior Dimensions11
Electrical Wiring12
Noise Level13
Application Data16
Indoor Units20
Specifications20
Wall Mounted Type (SRK)20
Floor Standing Type (SRF)32
Ceiling Concealed Type (SRR)35
4-Way Ceiling Cassette Type (FDTC)39
Ceiling Suspended Type (FDE)43
Duct Connected Low/Middle Static Pressure Type (FDUM)44
Exterior Dimensions45
Wall Mounted Type (SRK)45
Floor Standing Type (SRF)48
Ceiling Concealed Type (SRR)49
4-Way Ceiling Cassette Type (FDTC)51
Ceiling Suspended Type (FDE)52
Duct Connected Low/Middle Static Pressure Type (FDUM)53
Remote Control54
Electrical Wiring57
Wall Mounted Type (SRK)57
Floor Standing Type (SRF)60
Ceiling Concealed Type (SRR)61
4-Way Ceiling Cassette Type (FDTC)62
Ceiling Suspended Type (FDE)63
Duct Connected Low/Middle Static Pressure Type (FDUM)64
Noise Level65
Wall Mounted Type (SRK)65
Floor Standing Type (SRF)71
Ceiling Concealed Type (SRR)72
4-Way Ceiling Cassette Type (FDTC)78
Ceiling Suspended Type (FDE)80
Duct Connected Low/Middle Static Pressure Type (FDUM)81
Characteristics of Fan82
Application Data84
Wall Mounted Type (SRK)84
Floor Standing Type (SRF)96
Ceiling Concealed Type (SRR)100
4-Way Ceiling Cassette Type (FDTC)104
Ceiling Suspended Type (FDE)110
Duct Connected Low/Middle Static Pressure Type (FDUM)114
Piping System119
Range of Usage & Limitations120
Table of Indoor Unit Combinations121
Model SCM50ZS-S1121
Model SCM60ZM-S1124
Selection Charts128
Outline of Operation Control by Microcomputer129
SRK,SRF and SRR Series129
SRK-ZSX Series129
SRK-ZS Series139
SKM-ZSP Series148
SRF, SRR Series154
FDTC, FDE and FDUM Series164
Remote Control (Option Parts)164
Operation Control Function by the Wired Remote Control166
Operation Control Function by the Indoor Control169
Auto Operation169
Operations of Functional Items During Cooling/Heating170
Dehumidifying (DRY) Operation170
Timer Operation171
Remote Control Display During the Operation Stop172
Hot Start (Cold Draft Prevention at Heating)172
Hot Keep172
Auto Swing Control (FDTC, FDE Only)173
Thermostat Operation174
Filter Sign175
Compressor Inching Prevention Control175
Drain Pump Control176
Drain Motor (DM) Control176
Operation Check/Drain Pump Test Run Operation Mode176
Cooling, Dehumidifying Frost Protection177
Heating Overload Protection177
Anomalous Fan Motor178
Plural Unit Control - Control of 16 Units Group by One Remote Control178
High Ceiling Control178
Abnormal Temperature Sensor (Return Air/Indoor Heat Exchanger) Broken Wire/Short-Circuit Detection179
External Input/Output Control (Cnt or Cnta)179
Operation Permission/Prohibition181
Temporary Stop Input183
Selection of Cooling/Heating External Input Function183
Fan Control at Heating Startup184
Room Temperature Detection Temperature Compensation During Heating184
Return Air Temperature Compensation184
High Power Operation (RC-EX3 Only)184
Energy-Saving Operation (RC-EX3 Only)184
Warm-Up Control (RC-EX3 Only)184
Home Leave Mode (RC-EX3 Only)184
Auto Temp. Setting (RC-EX3 Only)185
Fan Circulator Operation (RC-EX3 Only)185
The Operation Judgment Is Executed Every 5 Minutes (RC-EX3 Only)185
Auto Fan Speed Control (RC-EX3 Only)185
IU Overload Alarm (RC-EX3 Only)185
Peak-Cut Time (RC-EX3 Only)185
Outdoor Units186
Outline of Heating Operation186
Summary186
Operation of Major Functional Components in Heating Mode186
Defrost Operation186
Outline of Cooling Operation187
Summary187
Operation of Major Functional Components in Cooling Mode188
Protective Control Function188
Cooling Overload Protective Control188
Cooling High Pressure Control188
Cooling Low Outdoor Temperature Protective Control189
Heating High Pressure Control189
Heating Overload Protective Control190
Heating Low Outdoor Temperature Protective Control190
Refrigeration Cycle System Protective Control191
Crankcase Heater191
Inching Prevention191
Compressor Overheat Protection192
Current Safe192
Current Cut193
Outdoor Unit Failure193
Discharge Pipe Sensor Disconnection Protection Control193
Regulation of Outdoor Air Flow193
Serial Signal Transmission Error Protection193
Rotor Lock193
Outdoor Fan Motor Protection194
Outdoor Fan Control at Low Outdoor Temperature194
Outdoor Fan Control at Overload195
Maintenance Data196
SRK, SKM, SRF and SRR Series196
Cautions196
Items to Check before Troubleshooting196
Troubleshooting Procedure (if the Air-Conditioner Does Not Run at All)196
Troubleshooting Procedure (if the Air-Conditioner Runs)197
Self-Diagnosis Table198
Service Mode (Trouble Mode Access Function)199
Inspection Procedures Corresponding to Detail of Trouble207
Phenomenon Observed after Shortcircuit, Wire Breakage on Sensor212
Checking the Indoor Electrical Equipment213
How to Make Sure of Wireless Remote Control214
Inspection Procedure for Blown Fuse on the Indoor and Outdoor PCB214
Outdoor Unit Inspection Points215
FDTC, FDE and FDUM Series217
Diagnosing of Microcomputer Circuit217
Selfdiagnosis Function217
Troubleshooting Procedure220
Troubleshooting at the Indoor Unit220
Check of Anomalous Operation Data with the Remote Control225
Inverter Checker for Diagnosis of Inverter Output227
Outdoor Unit Inspection Points227
Troubleshooting Flow228
List of Troubles228
Troubleshooting229
Table of Functions Connected Wired Remote Control (Rc-E5)271
Component Replacement273
Checking Procedure285
Option Parts290
Wired Remote Control290
Wireless Kit303
FDTC Series (RCN-TC-24W-E2)303
FDE Series (RCN-E-E2)311
FDUM Series (RCN-KIT4-E2)318
Simple Wired Remote Control (RCH-E3)326
Interface Kit (SC-BIKN2-E)332
Superlink E Board (SC-ADNA-E)336
Ceiling Concealed Type (SRR) Option Parts338
OA Spacer (FDTC Only)341
Duct Joint (FDTC Only)345
Filter Kit (FDUM Only)346
Technical Information348
Model SCM50ZS-S1348
Model SCM60ZM-S1354

Mitsubishi Heavy Industries SCM50ZS-S1 - Troubleshooting Procedure (if the Air-Conditioner Runs)

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