AC Chiller PCB Repair

AC Chiller PCB Repair

Commercial AC chillers and HVAC systems run complex control boards that manage compressors, fans, valves, and temperature regulation. When these boards fail, entire buildings lose climate control. We repair chiller PCBs, AHU controllers, VRV/VRF system boards, and building management system interfaces at the component level.

What We Repair

Chiller Electronics

  • ▶Centrifugal and screw chiller control boards
  • ▶Chiller compressor starter and protection boards
  • ▶Condenser and evaporator fan controllers
  • ▶Chiller display and operator panels
  • ▶Oil heater and level controllers

AHU & FCU Controllers

  • ▶Air handling unit control boards
  • ▶Fan coil unit controllers
  • ▶VAV box controllers
  • ▶Damper actuator controllers
  • ▶Humidifier and dehumidifier boards

VRV/VRF Systems

  • ▶Outdoor unit main control boards
  • ▶Indoor unit PCBs
  • ▶Communication and interface boards
  • ▶Inverter compressor driver boards

Common Symptoms

!Chiller showing fault code and refusing to start
!Compressor not starting or tripping on overload
!Temperature control erratic or not maintaining setpoint
!Display showing communication error with outdoor unit
!Fan speed control not working
!BMS interface not communicating
!Burnt smell or visible component damage on board

Brands We Service

CarrierTraneDaikinBlue StarVoltasMitsubishi ElectricHitachiJohnson Controls (York)McQuayEmerson Copeland

Our Repair Process

1

Fault Code Analysis

We start with the chiller's fault log and error codes to identify the failing subsystem.

2

Board Extraction & Diagnosis

The control board is bench-tested — power supply rails, relay outputs, sensor inputs, and communication verified.

3

Component Replacement

Failed relays, triacs, MOSFETs, capacitors, and ICs replaced with industrial-grade components.

4

Functional Test

Board tested with simulated sensor inputs and load conditions before return.

5

Warranty Return

Up to 6 months warranty with test report.

Need AC Chiller PCB?

Send photos and model number for a free quote within 24-48 hours.

Frequently Asked Questions

Can you repair on-site for large chiller systems?+

For nearby installations we can arrange on-site diagnosis. Board-level repairs are done in our workshop for proper bench testing.

Do you stock common chiller PCBs?+

For some popular Carrier and Daikin models we may have refurbished boards available — ask on WhatsApp.

How long does chiller PCB repair take?+

Typically 3–7 working days. We understand HVAC downtime is critical and prioritize accordingly.