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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.
| 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 | Inverter PCB - Outdoor PCB Transmission Failure (Loose Connector, Wire Breaking, Blowout of Fuse) |
04 | 04 |
