Laars FT Series Installation And Operation Instructions Manual page 71

Wall-mounted, modulating gas, condensing, heating only, boiler
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The FT Series Heating Only, Boiler
6.2.2
2. Gas Detection
6.2.3
Sensor detects
'Storage', 'DHW', 'OP', 'CH overheat', 'Exhaust heat'
Error code
E28
E33
E35
contents
DHW NTC open or short
OP NTC open or short
Exhaust NTC open or short
Page 71

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Fthw100Fthw140Fthw199

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