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FDUM90VNP1VF2
Mitsubishi Heavy Industries FDUM90VNP1VF2 Manuals
Manuals and User Guides for Mitsubishi Heavy Industries FDUM90VNP1VF2. We have
1
Mitsubishi Heavy Industries FDUM90VNP1VF2 manual available for free PDF download: Service Manual
Mitsubishi Heavy Industries FDUM90VNP1VF2 Service Manual (113 pages)
STANDARD INVERTER PACKAGED AIR-CONDITIONERS
Brand:
Mitsubishi Heavy Industries
| Category:
Air Conditioner
| Size: 11 MB
Table of Contents
Table of Contents
2
Outline of Operation Control by Microcomputer
4
Remote Control
4
Operation Section
7
Operation Control Function by the Wired Remote Control
8
CPU Reset
8
Alert Displays
9
Operation Control Function by the Indoor Control
11
Auto Operation
11
Dehumidifying (DRY) Operation
12
Timer Operation
13
Thermostat Operation
16
Filter Sign Setting
17
Drain Pump Control
18
Operation Check/Drain Pump Test Run Operation Mode
18
Cooling, Dehumidifying Frost Protection
19
Heating Overload Protection
19
Anomalous Fan Motor
20
High Ceiling Control
20
Selection of Cooling/Heating External Input Function
25
Operation Control Function by the Outdoor Control
29
Compressor Protection Start
29
Outdoor Fan Control
29
Reset Conditions
31
Outdoor Fan Motor Protection
31
Defrost Operation
31
Cooling Overload Protective Control
32
Cooling High Pressure Control
32
Cooling Low Outdoor Temperature Protective Control
32
Heating High Pressure Control
33
Heating Overload Protective Control
33
Heating Low Outdoor Temperature Protective Control
34
Compressor Overheat Protection
34
Cooling Heating
34
Current Safe
35
Current Cut
35
Outdoor Unit Failure
35
Serial Signal Transmission Error Protection
35
Rotor Lock
35
Refrigeration Cycle System Protection
35
Silent Mode
35
Broken Wire Detection on Temperature Sensor
36
Selfdiagnosis Function
37
Diagnosing of Microcomputer Circuit
37
Maintenance Data
37
Troubleshooting Procedure
40
Troubleshooting at the Indoor Unit
40
Power PCB
43
Terminal Block
44
Troubleshooting at the Outdoor Unit
48
Precautions for Safety
48
Check of Anomalous Operation Data with the Remote Control
52
Power Transistor Module (Including the Driver PCB) Inspection Procedure
54
Inverter Checker for Diagnosis of Inverter Output
55
Outdoor Unit Control Failure Diagnosis Circuit Diagram
56
Troubleshooting Flow
58
List of Troubles
58
Condition of Error Displayed
59
Operates but Does Not Heat
60
Earth Leakage Breaker Activated
61
Excessive Noise/Vibration
62
All Models
64
Communication Error at Initial Operation
70
Communication Error During Operation
74
Applicable Model
76
Error Detection Method
76
Heating Overload Operation
77
Address Setting Error of Indoor Units
80
Communication Error between Master and Slave Indoor Units
81
Troubleshooting
81
Indoor Fan Motor Anomaly
82
Indoor Unit Operation Check, Drain Motor Check Setting Error
84
Discharge Pipe Temperature Error
89
Error Detection Method
59
Applicable Model
59
Troubleshooting
59
Operates but Does Not Cool
59
Seconds Continuously Within 2 Minutes to 2 Minutes
90
ON, the Compressor Stops. after 3-Minutes Delay, the Compressor
90
When -55 °C or Lower Is Detected for 5 Seconds Continuously Within
90
Outdoor Air Temperature
91
Outdoor Air Temperature Sensor Anomaly
91
Is the
92
Discharge Pipe Temperature Sensor Anomaly
92
Current Cut
94
Active Filter Voltage Error
96
Presumable Cause
92
Troubleshooting
92
5Kω at 25°C
99
Electrical Wiring
103
Indoor Units
103
Outdoor Units
110
Piping System
112
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