Install Instructions

The FT Series Heating Only, Boiler
Page 71
6.2 Fault Tree Analysis (continued)
2. Gas Detection
3. ‘Storage’, ‘DHW’, ‘OP’, ‘CH overheat’, ‘Exhaust heat’ Sensor detects
Error code contents
E28 DHW NTC open or short
E33 OP NTC open or short
E35 Exhaust NTC open or short