Genuine Samsung Outdoor Inverter PCB DB93-11113B – RC155DHXEG

This is the genuine Samsung outdoor inverter printed circuit board, part number DB93-11113B, used in RC155DHXEG outdoor units. The inverter board drives the compressor by converting DC to variable frequency AC, and it protects the system by monitoring current, voltage and module temperature. It is one of the highest-stress components in the entire system, which is why it is a common failure point in larger inverter units.

Typical symptoms of a failed outdoor inverter PCB

• Compressor will not start, or starts and trips within seconds
• IPM, inverter, overcurrent or DC link error codes
• Outdoor unit powers up but never runs the compressor
• Repeated tripping of the circuit breaker when the compressor attempts to start
• Burnt power module, blown fuse, bulged electrolytic capacitors, scorched tracks

Confirm the cause before you replace

Inverter boards rarely die of old age alone. The usual culprits are a shorted or seized compressor, a failed outdoor fan or blocked condenser causing thermal overload, water ingress, or a supply surge. A licensed technician should test compressor winding resistance and insulation resistance to earth before a new inverter board is fitted. Installing a new board onto a faulty compressor will destroy the board immediately, and that failure is not a warranty claim.

Product details

• Part number: DB93-11113B
• Description: Samsung outdoor inverter PCB
• Suits: RC155DHXEG outdoor unit (confirm against your data plate)
• Type: genuine Samsung part
• Condition: new
• Warranty: 12 months parts warranty
• Delivery: dispatched from Brisbane, Australia wide

Installation

Licensed and ARCtick authorised technicians only. Isolate the supply and confirm the DC bus is fully discharged before touching the board. Apply fresh thermal compound to the power module mounting face where required, torque the module fixings correctly, and verify all connector positions against the service manual before energising.

Returns

Electronic components are not returnable once fitted or powered up, or if anti-static packaging has been opened. Confirm the part number with us before purchase.