-
-
-
HVAC Express Parts
SKU: 10000100013
W8433CAV1.1 / 10000100013 Electric Box Assy
Free Shipping In Stock$299.99 -
HVAC Express Parts
SKU: 10000100328
W8203KV1.0 / 10000100328 Electric Box Assy
Free Shipping In Stock$519.99 -
HVAC Express Parts
SKU: 30138509
M830F2HJTOV2.1 / 30138509 Main Board
Free Shipping In Stock$129.99 -
HVAC Express Parts
SKU: 3013810801
W8196124AV1.0 / 3013810801 Main Board
Free Shipping In Stock$289.99 -
-
-
-
HVAC Express Parts
SKU: 30138000300
W8303GMV1.0 / 30138000300 Main Board
Free Shipping In Stock$129.99 -
HVAC Express Parts
SKU: 30138000312
M847F2BRJV1.7 / 30138000312 Main Board
Free Shipping In Stock$149.99 -
Main Boards • Inverter Modules • Control Box Assemblies • OEM Matched
Mini-Split Control Boards & Inverter Modules
Replacement mini split control boards, inverter modules and electronic control box assemblies matched by OEM part number. Compatible with Cooper & Hunter, MrCool, Pioneer, Senville, Blueridge, Comfortstar, Klimaire, Innovair and other Midea-platform systems. Orders before 2 PM ET ship same day.
- 180+ Boards In Stock
- Same-Day Dispatch
- OEM Part Number Matched
- Wholesale for Contractors
Types of Mini-Split Control Boards
- Main control board (outdoor unit) — controls the compressor, fan motor, and refrigerant valves. Most common replacement after lightning or voltage spikes.
- Inverter module / IPM — converts DC bus voltage to variable-frequency AC for the compressor. Fails from power surges or overheating.
- Electronic control box assembly — complete sub-assembly with board, capacitors, and terminal block, pre-assembled and ready to install.
- Indoor control board — controls indoor fan motor, louvers, and communicates with the outdoor unit.
How to Diagnose — Before You Order
| Symptom | Check first |
|---|---|
| EC07 — outdoor fan speed fault | Fan motor and fan blade |
| Compressor won't start | Inverter module / IPM, then compressor winding test |
| No comms between units | Indoor board and interconnect wiring |
| Defrost not running | Outdoor coil sensor, then outdoor main board |
See our error codes guide for full code lists.
FAQ: Mini-Split Control Board Replacement
Does a mini split have a separate defrost control board?⌄
No. Unlike central heat pumps that use a standalone defrost control board, mini-split systems
manage defrost entirely through the outdoor main control board, using temperature sensors on the outdoor coil.
If defrost is not initiating, the fault is typically a faulty coil sensor or a bad outdoor main board.
See our Compressors section if you suspect refrigerant loss.
My unit shows error code EC07 — is that the control board?⌄
Can I use a board from a different model of the same brand?⌄
Only if the OEM part number matches exactly. Different unit models use different firmware
and hardware revisions. An incorrect board may trigger fault codes or damage the system.
Do you ship control boards same day?⌄
Yes — in-stock boards ship the same business day on orders placed before 2 PM ET,
from our Hialeah, FL warehouse. Most US destinations receive within 2–4 business days.
Do you offer wholesale pricing for contractors?⌄
Yes — HVAC contractors receive volume pricing.
Contact us for terms and account setup.