Selection Guide
Control Boards Buying Guide: Selection Points, OE Cross Reference, MOQ and FOB Terms
How to buy main boards, display boards, inverter boards and power modules for appliances: program and pinout matching, OE cross reference, MOQ policy and FOB pricing explained.
2026-09-22 · 8 min read · GGATC Technical Team
Control boards are the highest value and most model specific parts in appliance after sales. A board that powers on but runs the wrong program is worse than a dead one, so matching must be exact. This guide explains how importers and service centers select boards and the commercial terms that apply.
Selection Points for Control Boards
| Parameter | What to Check | Why It Matters |
|---|---|---|
| Board number | Printed silkscreen code, for example DA41 or W274 series | The primary identity of the board |
| Program set | Cycle list and display segment layout must match the original | Wrong programs confuse users and fail acceptance |
| Connector pinout | Pin count, spacing and silk labels per connector | Reversed pinouts damage the board on first power up |
| Input voltage | 220-240V or 110-120V and relay ratings | Determines market suitability |
| Component layout | Compare photos of relays, transformer and IPM positions | Layout revisions reveal program generation |
Inverter boards and IPM modules are paired with specific compressor and motor families. When replacing an inverter board, confirm the driver firmware generation with the supplier, and prefer boards tested on a matching jig before shipment.
OE Number Cross Reference Method
- Read the silkscreen board number, not the sticker added by the machine brand.
- Photograph both sides of the board so connector labels and revision marks are visible.
- Record the appliance model and nameplate voltage from the machine.
- Count pins per connector and note silk labels such as CN1, CN7 or J201.
- Send board photos plus appliance model to the supplier for a fitment confirmation before ordering.
MOQ and FOB Terms Explained
MOQ for control boards is 100 pieces for standard programs and 30 pieces for trial orders, with limited model mixing because boards are program specific. FOB, free on board, means the USD price covers goods, export clearance and loading at the China port, freight and duties are on the buyer. Tiered reference prices for 1-4, 5-19 and 20+ pieces appear on each product page, and every board ships after a powered function test with 12 months warranty from shipment date.
Frequently Asked Questions
| Question | Answer |
|---|---|
| Are boards brand original? | No, they are compatible aftermarket boards matched by number and program, brand names describe fitment only. |
| Can programs be customized? | Custom program sets are discussed for repeat orders above agreed volume. |
| What if the board fails in warranty? | Replace or credit on the next order, with test photos kept for every batch. |
| Do you test before shipping? | Every board is powered and function tested on a jig before dispatch. |
Conclusion: match control boards by silkscreen number, program set and pinout, never by appliance brand alone, and order samples before bulk. The control boards category lists tested aftermarket boards with tiered FOB reference prices and MOQ, and fitment confirmation is free within 24 hours via sales88@ggatc.com or WhatsApp +86 181 5864 9251.
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Every compatible aftermarket part in this category with OE numbers, parameters, tiered FOB reference prices and MOQ published per product.
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