Repair
Repair Price: $ 1,894.00
Purchase
CSL Part Number: 115852
Product Overview: The Johnson Controls ACH550 (manufactured by ABB) is a variable frequency drive designed to control three-phase AC motors in HVAC applications. This 20 horsepower model operates at 480VAC input and provides 15kW output power for precise motor speed and torque control. It is commonly used in building automation systems for pumps, fans, and air handling units. The drive features integrated HVAC-specific programming, multiple I/O options, and built-in motor protection functions. The unit includes three-phase bridge rectifier, IGBT power modules, and DC bus capacitors for AC-to-DC-to-AC power conversion.
Category: AC Motor Controls
Manufacturer: Johnson Controls
Alternate Manufacturer Names: ABB
Manufacturer Part Number: AYK550-UH-031A-4+K465
Series: ACH550 VFD
Also Known As(AKA): ACH550
Other Synonyms: ABB
Please include the Keypad/Remote with the drive when sending in for repairs.
Common Failures
Common issues observed with this product include component damage, dust accumulation around ventilation areas, and debris in cooling fans. Bridge rectifiers and IGBT modules are frequently found to require replacement during evaluation. Gate drive circuit faults may also contribute to operational issues.
Repair Approach
Repairs typically involve thorough cleaning and replacement of affected components. We evaluate each unit individually and provide a quotation before any repair work begins. Some units may present intermittent or difficult-to-diagnose faults that require in-depth evaluation.
Testing & Quality
We perform diagnostic testing using oscilloscopes and other test equipment to identify faults. Not all units are repairable; some may be designated Beyond Economic Repair depending on the extent of damage or component availability. Regular maintenance and proper operating environment can help extend product life.
Service and repair your broken Johnson Controls part
We can repair your Johnson Controls model AYK550-UH-031A-4+K465 in our facility. Let our skilled technicians get your Johnson Controls back in operation quickly.
Step 1 - Click the green 'Repair Now' button above to add the part and then complete the RMA.
Step 2 - The RMA form will be sent to you via email. Print the RMA form and put it in a box with the item(s) for repair.
Step 3 - Ship or mail the box to the address listed on the RMA.
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