What are the specs for this Control Board?

The correct replacement for Tempstar model TCH248AKAA — Heat Pump | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Tempstar equipment which lists the model number TCH248AKAA — Heat Pump | Ships Today.

Is this control board compatible with Bryant or Payne systems too?

Many Tempstar parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Tempstar

Tempstar Defrost Control Board for TCH248AKAA — Heat Pump | Ships Today

Name: Tempstar Defrost Control Board for TCH248AKAA — Heat Pump | Ships Today
Brand: Tempstar
SKU: 1086070-GEN
Price: 165.00 USD
Availability: InStock

SKU: 1086070-GEN Brand: Tempstar

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Overview

This is the genuine OEM defrost control board (part number 1086070) for the Tempstar TCH248AKAA heat pump. The board manages the outdoor unit's defrost cycle — monitoring coil temperature and run time, energizing the reversing valve, stopping the outdoor fan, and initiating defrost to clear frost and ice from the condenser coil in heating mode. A failed defrost board leaves the outdoor coil iced over, kills heating capacity, and can trip the system on high pressure.

Specifications

Spec	Value
Part Number	1086070
Type	Defrost Control Board
Brand	Tempstar
Control Voltage	24 VAC
Application	Heat Pump Defrost Control
Fit	OEM

Compatibility

Built for the Tempstar TCH248AKAA heat pump and shared ICP / Heil / Comfortmaker outdoor units using defrost board 1086070. Match the part number and any jumper/timing settings before installing.

Installation Guide

Safety First — Disconnect power, verify zero voltage with a multimeter.
Access — Remove the condenser control panel to expose the board.
Document — Photograph every connector and the defrost timing jumper position.
Remove — Unplug all harnesses, release the standoffs, and lift out the old board.
Install — Snap in the new board, set the timing jumper to match, and reconnect each harness per your photo.
Test — Restore power and initiate a forced defrost (per the board's test pins) to confirm operation.

Signs You Need a Replacement

Outdoor coil ices over and never defrosts.
Heat pump never runs a defrost cycle, or defrosts constantly.
No power to the reversing valve or outdoor fan during defrost.
Visible burn marks, corrosion, or no board LED activity.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

Tempstar Defrost Control Board f...

$165.00

Frequently Asked Questions

Does this Control Board fit my Tempstar TCH248AKAA — Heat Pump | Ships Today?

Yes. This is the factory-specified OEM control board for the Tempstar TCH248AKAA — Heat Pump | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the control board on my Tempstar TCH248AKAA — Heat Pump | Ships Today?

Difficulty: Advanced (1–2 hrs)
Step 1: Turn off breaker. Step 2: PHOTOGRAPH all wire connections before touching anything. Step 3: Label each wire with tape. Step 4: Disconnect all wires, remove old board. Step 5: Mount new board, reconnect all wires matching your photo exactly. Step 6: Restore power and test all modes. Exact part number match is critical.

My HVAC system is completely dead. What could be wrong?

Completely dead HVAC (no LED on board) = failed control board or blown fuse. Check board fuse first (3A or 5A, costs $1–$5). If fuse is good and board has power but no LED, board is dead. Always photograph wiring before replacing.

Is this control board compatible with Bryant or Payne too?

Many Tempstar parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Tempstar control board?

OEM essential. Control boards are model-specific with precise firmware and connector layouts. Aftermarket boards rarely match all functions and can cause intermittent failures or safety issues. Always match the exact OEM part number.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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