Difference between revisions of "Hitachi"

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|Abnormality between Outdoor and Outdoor  
 
|Abnormality between Outdoor and Outdoor  
 
|Incorrect Wiring, Breaking Wire, Loose Terminals  
 
|Incorrect Wiring, Breaking Wire, Loose Terminals  
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|Incorrect Outdoor Unit Address Setting  
 
|Incorrect Outdoor Unit Address Setting  
 
| Incorrect Outdoor Unit Address Setting
 
| Incorrect Outdoor Unit Address Setting
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|Incorrect Outdoor Unit Main Unit Setting  
 
|Incorrect Outdoor Unit Main Unit Setting  
 
| Two (or more) Outdoor Units Set as “Main Unit”
 
| Two (or more) Outdoor Units Set as “Main Unit”
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Revision as of 02:18, 24 September 2017

Control Wiring Termination

In some cases with relatively big HVAC systems, where the total length of the wiring is high, control wire termination may be required. Termination can also be helpful if a control communication is noisy as a result of external electromagnetic influence. Termination can be easily made on CoolMasterNet side. To do it turn ON DIP Switch S2 - for line L1 and/or S3 - for line L2 as shown below. Rest of the DIP Switches should not be changed.
CM5-dips-TO.png

Malfunction
Code
Category Content of Abnormality Leading Cause Cool
Automation
Encoding
01 Indoor Unit Activation of Protection Device (Float Switch) Activation of Float Switch
(High Water Level in Drain Pan,
Abnormality of Drain Pipe, Float Switch or Drain Pan)
01 01
02 Outdoor Unit Activation of Protection Device
(High Pressure Cut)
Activation of PSH (Pipe Clogging, Excessive
Refrigerant, Inert Gas Mixing)
02 02
03 Transmission Abnormality between Indoor and Outdoor Incorrect Wiring, Loose Terminals, Disconnect Wire,
Blowout of Fuse, Outdoor Unit Power OFF
03 03
04 Transmission Abnormality between Inverter PCB and Outdoor PCB Inverter PCB - Outdoor PCB Transmission Failure
(Loose Connector, Wire Breaking, Blowout of Fuse)
04 04
04 Transmission Abnormality between Fan Controller and Outdoor PCB Fan Controller - Outdoor PCB Transmission Failure
(Loose Connector, Wire Breaking, Blowout of Fuse)
04 04
05 Supply Phase Supply Phase Incorrect Power Source, Connection to
Reversed Phase, Open-Phase
05 05
06 Voltage Abnormal Inverter Voltage
Abnormal Fan Controller Voltage
Outdoor Voltage Drop, Insufficient Power Capacity 06 06
07 Cycle Decrease in Discharge Gas Superheat Excessive Refrigerant Charge, Failure of Thermistor,
Incorrect Wiring, Incorrect Piping Connection,
Expansion Valve Locking at Opened Position
(Disconnect Connector)
07 07
08 Cycle Increase in Discharge Gas Temperature Insufficient Refrigerant Charge, Pipe Clogging,
Failure of Thermistor, Incorrect Wiring,
Incorrect Piping Connection, Expansion Valve Locking
at Closed Position (Disconnect Connector)
08 08
0A Transmission Abnormality between Outdoor and Outdoor Incorrect Wiring, Breaking Wire, Loose Terminals 10 0A
0b Outdoor Unit Incorrect Outdoor Unit Address Setting Incorrect Outdoor Unit Address Setting 11 0B
0C Outdoor Unit Incorrect Outdoor Unit Main Unit Setting Two (or more) Outdoor Units Set as “Main Unit” 12 0C
11 Sensor on Indoor Unit Inlet Air Thermistor Incorrect Wiring, Disconnecting Wiring
Breaking Wire, Short Circuit
11 11
12 Sensor on Indoor Unit Outlet Air Thermistor Incorrect Wiring, Disconnecting Wiring
Breaking Wire, Short Circuit
12 12
13 Sensor on Indoor Unit Freeze Protection Thermistor Incorrect Wiring, Disconnecting Wiring
Breaking Wire, Short Circuit
13 13
14 Sensor on Indoor Unit Gas Piping Thermistor Incorrect Wiring, Disconnecting Wiring
Breaking Wire, Short Circuit
14 14
19 Fan Motor Activation of Protection Device for Indoor Fan Fan Motor Overheat, Locking 19 19