Replacement wall-mount digital control center that lets you set water temperature and operate the ST42 on-demand water heater from inside the RV.
The Suburban Mfg 521338 is a genuine OEM replacement wall-mount controller for the Suburban ST42 on-demand water heater. It lets you set and adjust water temperature from inside the RV, rather than at the water heater itself, and includes the outer case for a clean, professional wall-mount installation. It's manufactured by Schuster to Suburban's original specifications for a precise OEM fit.
This part is the interior wall-mount temperature control panel, not the water heater's internal ignition module board. If the internal control board needs replacing instead, that's a separate part (#233666) on the ST42 parts breakdown.
• (1) Suburban Mfg 521338 wall-mount controller • Outer case