Installed 10 yrs. No issues, last week continuous E1 code with occasional E9. Temp switches good, works good for a few min., then temp. fluctuates . Led shows fault triangle when burner ignites/cycles followed by E1 code, resets, then starts again. Descaled, no help.. Checked all conn., all secure.. In diag. mode all seems steady, except I have ? , gpm flow seems to show high, 19 gpm, with actual, meas. at shower head, approx. 4 gpm. Is my indication correct? I thought not and replaced...
Bosch 2700es E1 code
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