Suburban ST42A / ST60A error code En
Water heater timeout - unit ran continuously for longer than 20 minutes
What to check, and in what order, is in the app. The flow Suburban tankless — IW60 / ST-42 / ST-60 error code + symptom diagnostic walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- Suburban ST42A/ST60A Service Manual - ERROR CODES chartAirxcel/Suburban
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