NHTSA service bulletin

NHTSA Service Bulletin 10189552: 2020, 2021 American Coach American Revolution

Official manufacturer communication context for 2020, 2021 American Coach American Revolution, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10189552 summary graphic for 2020, 2021 American Coach American Revolution
10189552NHTSA document ID
Technical service bulletincommunication type
6affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

The purpose of the service bulletin is to inform all REV dealers about the attached service bulletin released by Aqua Hot on March 15, 2021, regarding an updated control thermostat. CONDITION: : Aqua-Hot has announced that due to a higher than normal failure rate on the ELE-014-010 Control Thermostat in the 250D and 250P Series of hydronic heating systems, this part has been redesigned. The old part number, (with black epoxy), has been replaced with part number ELE-015-011 (with tan epoxy). If there is a field failure of the control thermostat, Aqua Hot will provide a replacement thermostat with the new part number. CONDITION: : Aqua-Hot has announced that due to a higher than normal failure rate on the ELE-014-010 Control Thermostat in the 250D and 250P Series of hydronic heating systems, this part has been redesigned. The old part number, (with black epoxy), has been replaced with part number ELE-015-011 (with tan epoxy). If there is a field failure of the control thermostat, Aqua Hot will provide a replacement thermostat with the new part number.

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
American CoachAmerican Revolution2020, 2021Ask for service records and run the exact VIN before purchase.
FleetwoodDiscovery2020, 2021Ask for service records and run the exact VIN before purchase.
FleetwoodDiscovery Lxe2020, 2021Ask for service records and run the exact VIN before purchase.
Holiday RamblerArmada2021Ask for service records and run the exact VIN before purchase.
Holiday RamblerEndeavor2020, 2021Ask for service records and run the exact VIN before purchase.
Holiday RamblerNautica2021Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 10189552?

The purpose of the service bulletin is to inform all REV dealers about the attached service bulletin released by Aqua Hot on March 15, 2021, regarding an updated control thermostat. CONDITION: : Aqua-Hot has announced that due to a higher than normal failure rate on the ELE-014-010 Control Thermostat in the 250D and 250P Series of hydronic heating systems, this part has been redesigned. The old part number, (with.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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