CoolMaster DIP switch configuration

This article applies to the following CoolMaster products:

  • CoolMaster * 
  • CoolMasterPro 
  • CoolMasterNet
  • CloudBox

Configuring the CoolMaster DIP switches are essential for a proper device operation and IDU discovery.

Different HVAC brands require different configurations. 

The following article specifies the guidelines for the DIP switch configuration.

 

DIP Switches are located under the small access door on the front plastic cover of your device

 

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DIP Switches order

The DIP Switches rows are referenced by the P, Q, R, S letters 

CM5-DIP

 

DIP Switch P

Switch ON OFF
P1, P2 Link L6,L7 and enable polarity auto-detection on L7 Separate L6,L7
P3 L6 Enabled, L2 Disabled L2 Enabled, L6 Disabled
P4 N/A Normal Operation Mode

 

 

Note!

  • Switches P1 and P2 should be in the same position. If they are both in ON position, HVAC Lines L6 and L7 are linked into one line with option to auto-detect line polarity. Otherwise, if both P1 and P2 are in OFF position HVAC Lines L6 and L7 are separate independent lines.
  • If L6 and L7 are linked into L7, enabling of the L2 with P3 will not influence on L7 operation.

  • Switch P4 must be in OFF position for normal operation of CoolMasterNet.

 

DIP Switches Q,R

DIP Switched Q and R are used to adjust HVAC Lines L1 and L2 internal parameters to meet specific HVAC type requirements.

 

HVAC Type DIP Switch Q - HVAC Line L1
Q1 Q2 Q3 Q4
DK ON OFF ON OFF
ME OFF OFF OFF OFF
TO OFF ON OFF ON
SA OFF ON OFF ON
PN OFF ON OFF ON
HT OFF ON OFF ON
HA OFF ON OFF ON

 

 

HVAC Typ DIP Switch R - HVAC Line L2
R1 R2 R3 R4
DK ON OFF ON OFF
ME OFF OFF OFF OFF
TO OFF ON OFF ON
SA OFF ON OFF ON
PN OFF ON OFF ON
HT OFF ON OFF ON
HA OFF ON OFF ON

 

 

Note!

  • If all four Dip Switches R1, R2, R3, R4 are in ON position during CoolMasterNet power reset, CoolMasterNet will be forced to enter BOOT Mode.

 

 

DIP Switch S

Switch ON OFF
S1, S2 Enable DC Output on HVAC Line L1 Disable DC Output on HVAC Line L1
S3, S4 Enable DC Output on HVAC Line L2 Disable DC Output on HVAC Line L2

 

 

Note!

  • Switches S1 and S2 should be in the same position.
  • Switches S3 and S4 should be in the same position.
  • DC Output on HVAC Line L1 or L2 is required only in case when the line is configured as DK or ME and non-VRF equipment is connected to this line (via KRP, MAC or similar adapter). And only if no other DC source is present on this line!

 

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