![background image](http://html.mh-extra.com/html/daikin/2mkd58bvm/2mkd58bvm_service-manual_501072213.webp)
Troubleshooting
Si12-411A
202
Service Diagnosis
5.23
Insufficient Gas
Remote
Controller
Display
U0
Outdoor Unit LED
Display
A
5
1
1
2
1
3
4
4
4
Method of
Malfunction
Detection
Gas shortage detection I : A gas shortage is detected by checking the CT-detected input current
value and the compressor running frequency.
Gas shortage detection II : A gas shortage is detected by checking the difference between
indoor unit heat exchanger temperature and room temperature as well as the difference
between outdoor unit heat exchanger temperature and room temperature.
Malfunction
Decision
Conditions
Gas shortage detection I :
Input current < 8.78 / 256 (A/Hz) x Compressor running fre 0.25
However, when the status of running frequency > 55 (Hz) is kept on for a certain time.
Note : The values are different from model to model.
Gas shortage detection II :
If a gas shortage error takes place 4 times straight, the system will be shut down. The error
counter will reset itself if this or any other error does not occur during the following 60-minute
compressor running time (total time).
Supposed
Causes
Refrigerant shortage (refrigerant leakage)
Poor compression performance of compressor
Discharge pipe thermistor disconnected, or indoor unit or outdoor unit heat exchanger
thermistor disconnected, room or outside air temperature thermistor disconnected
Stop valve closed
Electronic expansion valve defective
Summary of Contents for 2MKD58BVM
Page 1: ...C Series Applied Models zInverter Multi Cooling Only zInverter Multi Heat Pump Si12 411A ...
Page 6: ...Si12 411A Table of Contents v Index i Drawings Flow Charts v ...
Page 7: ...Si12 411A vi Table of Contents ...
Page 67: ...Specifications Si12 411A 56 Specifications ...
Page 173: ...Instruction Si12 411A 162 System Configuration ...
Page 227: ...Check Si12 411A 216 Service Diagnosis ...
Page 295: ...Si12 411A iv Index ...
Page 298: ...Si12 411A Printed in Singapore 03 2005 AK COS ...