Replacing A Display Module; Replacing A Switch Or Contactor - Huawei NetCol8000-C190 User Manual

NetCol8000-C190 In-room Chilled Water Smart
Cooling Product
User Manual (2022, Singapore STT)
Step 8 Choose Maint > Diagnostic Mode > Enter and set Indoor fan to 100%.
Step 9 Block almost 100% air volume at the return air side using a plastic foam board or
baffle plate, and check whether the Air filter blocked alarm is generated. If the
alarm is generated, the differential pressure switch works properly. Then exit the
diagnostics mode.
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7.6 Replacing a Display Module

Context
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Procedure
Step 1 Open the front door.
Step 2 Remove the cables from the display module.
Step 3 Use a Phillips screwdriver to remove the four screws from the rear of the display
module.
Step 4 Take out the display module.
Step 5 Install the new display module and cables.
Step 6 After the cables are reconnected, the home screen is displayed on the display
module. Check whether the display is normal.
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7.7 Replacing a Switch or Contactor

A switch and a contactor are replaced in the same way. The following describes
how to replace a switch.
Context
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Procedure
Step 1 Tap Shutdown on the home screen of the indoor unit display module.
Issue 02 (2022-03-30)
A display module needs to be replaced.
A spare display module of the same model is available and functional.
Tool: Phillips screwdriver
A switch needs to be replaced.
A spare switch of the same model is available and functional.
Tools: Phillips screwdriver, flat-head screwdriver
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7 Parts Replacement
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