Repair
Repair Price: $ 904.00
Purchase
CSL Part Number: 80620
Product Overview: The Atwood Auto Controller Workhorse 66274 REV 5 is a microprocessor-based control module designed to operate hydraulic leveling leg systems in recreational vehicles, commonly found in motorhomes and fifth-wheel trailers. It manages four independent leg channels, each controlled by automotive-grade twin relays that switch high-current DC power to hydraulic actuators. The controller monitors motor current through precision sense resistors and dedicated ICs to detect leg position and prevent overload. It communicates with a separate keypad interface for manual or automatic leveling operation. Operating on 12VDC vehicle power, the unit features error detection with audible and visual alarms for fault conditions on any leg channel.
Category: Control Assembly
Manufacturer: Atwood
Manufacturer Part Number: 66274
Also Known As(AKA): 10323L 66274 REV 5
** Send your keypad AND controller ** (see diagram) and we will test them to isolate the problem to the keypad, controller, or wiring/jacks (minimum $75 checkout fee may apply). Excessive burn damage or corrosion will result in additional costs.
Common Failures
Frequent issues with this product include power-related problems where the unit receives power but fails to distribute it correctly, often due to faulty relays. Moisture and corrosion within the unit can cause functional disruptions. Additionally, defective components such as relays, connectors, and current monitor regulators may contribute to operational failures. Customers also report issues such as non-responsive leveling legs or error codes appearing on controls.
Repair Approach
Our repairs typically involve replacing defective components such as relays, resistors, and current monitor regulators. Preventative maintenance, including the replacement of common failure-prone components, is standard practice. Circuit board trace repairs are performed when necessary to restore connectivity. Repairs are followed by conformal coating application to protect components from environmental factors.
Testing & Quality
All units undergo testing post-repair to verify functionality. Level 5 testing is conducted as per established procedures using customer or standard keypads and test fixtures. Burn-in tests with loads are carried out to validate performance under operating conditions. Each unit is checked and co-inspected by multiple technicians to confirm the effectiveness of repairs before return.
Service and repair your broken Atwood part
We can repair your Atwood model 66274 in our facility. Let our skilled technicians get your Atwood 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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