Table Of Contents - Mitsubishi Electric EHSE-YM9EC Service Manual

Table of Contents

Contents1
Service Manual1
Reference Manual2
Safety Precaution3
Cautions For Service5
Additional Refrigerant Charge5
Service Tools5
Specifications6
Optional Extras6
Parts Names And Functions8
Outlines And Dimensions9
Service Access Diagrams10
Wiring Diagram11
Dip Switch Setting15
Automatic Switch To Heat Source Only Operation15
Field Wiring16
Hydrobox Powered Via Outdoor Unit16
Hydrobox Powered By Independent Source17
Water Circuit Diagram18
Water System Diagram18
Local System19
Filling The System (Primary Circuit)20
Draining The Hydrobox20
Controls21
Main Remote Controller21
Main Screen Icons21
Setting The Main Remote Controller22
Main Settings Menu22
General Operation22
Main Remote Controller Menu Tree23
Service Menu25
Manual Operation25
Function Settings25
Thermistor Adjustment26
Auxiliary Settings26
Economy Settings For Pump26
Electric Heater (Heating)26
Mixing Valve Control27
Flow Sensor27
Heat Source Setting27
Pump Speed27
Operation Settings28
Heating Operation28
Freeze Stat Function28
Simultaneous Operation28
Energy Monitor Settings29
Settings Using The Main Remote Controller29
Calculation Internally29
Actual Measurement By External Meter29
General Description29
External Input Settings30
Running Information30
Thermistor Reading30
Summary Of Settings31
Error History31
Password Protection31
Resetting The Password32
Manual Reset32
Sd Card32
Sd - Main Rc/Main Rc - Sd32
Table 9-4-133
Indoor Unit Switch Setting Display (Request Code: 162 To 166)34
Output Signal Display (Request Code: 175/553)36
Input Signal Display (Request Code: 176/554)39
Indoor Unit Only Operation40
Emergency Operation40
Troubleshooting41
Test Run41
Malfunction Diagnosis Method By Main Remote Controller41
Summary Of Self Diagnosis Based On Error Codes And Service Procedures41
Self Diagnosis And Action42
Troubleshooting By Inferior Phenomena48
Annual Maintenance52
Checking Component Parts' Function53
Thermistor Characteristics Charts55
Test Point Diagram56
Ftc (Controller Board)56
Disassembly Procedure57
Preparation For The Repair Service57
How To Remove The Front Panel57
How To Remove The Main Remote Controller57
How To Remove The Electrical Parts58
How To Swing The Control Box To The Front59
How To Remove Water Pump/Pump Valve60
How To Remove The Flow Sensor61
How To Remove The Booster Heater62
How To Remove The Strainer Valve63
How To Remove The Plate Heat Exchanger64
How To Remove The Manometer/Pressure Relief Valve/Air Vent (Automatic)66
How To Remove The Drain Cock (Primary Circuit)67
How To Remove The Thermistor68
How To Remove The Drain Pan (Ers Series)69
How To Detach And Attach The Different Diameter Quick Joint70
Notes On Replacing The Parts71
Back-Up Operation Of Boiler72
Multiple Outdoor Units Control72
Supplementary Information72
Service And Maintenance73
Engineers Forms73
Annual Maintenance Log Book75
Parts Which Require Regular Replacement75