The Recall Desk
HighCPSC·02524·Announced 2002-03-13

Viessmann Recalls SR-RN-2 and SR-RN2R Boiler Controls for Safety Hazard

Viessmann is recalling 190 boiler controls installed in Atola-RN boilers because a failing relay may allow the burner to operate without proper flue damper interlock, risking carbon monoxide emissions.

What this means for you

Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.

Our severity reasoning: The recall involves a risk-of-harm product (carbon monoxide emissions) where injury has not yet been reported, which aligns with the 'High' severity criteria in the rubric.

Plain-English summary

Viessmann Manufacturing Company (U.S.) is recalling 190 SR-RN-2 and SR-RN2R Boiler Controls. These controls were installed in Atola-RN Boilers and were manufactured between December 1998 and December 2001. The recall covers the entire production of these specific controls, which were sold nationwide by wholesalers and distributors.

The recall is due to a defect in the electronic relay, which may fail in a manner that allows the burner to operate while bypassing the interlock with the flue damper. This interlock is designed to ensure the damper operates correctly to remove combustion gases. If the interlock fails, excess carbon monoxide emissions may occur. No injuries have been reported in connection with this defect.

Consumers who have these boilers should contact their local distributor or Ms. Ulli Hiltz at Viessmann Manufacturing Company at 888-843-2772 between 8:30 am and 5:00 pm ET, Monday through Friday. Viessmann will install a wiring module in the suspect boilers to add a redundant switch in series with the faulty switch, ensuring the safety interlock with the flue damper is maintained.

The recalled product

Product
SR-RN-2 and SR-RN2R Boiler Control
Manufacturer
Viessmann Manufacturing Company (U.S.), of Warwick, R.I.
Category
Consumer Product — Boilers & Accessories
Hazard
Affected units
190

Distribution

Distributed nationwide across the United States.

Related recalls

Same hazard · carbon monoxide

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