Runxin F105AD - Page 39

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D. Raw water quality
deteriorated.
E. Impeller of flow meter
has already gotten stuck.
water, recount and reset.
D. Regenerate unit by manual
temporarily, then reset regeneration
cycle.
E. Disassemble flow meter and
clean it or replace a new flow meter.
B.Controller Fault
Problem
Cause
Correction
1. Indictors
display on front
panel are
incorrect.
A. Wire of display board with
control board fails to work.
B. Control board damaged.
C. Transformer damaged.
D. Electrical service is not
stable.
A. Check and replace the
wire.
B. Replace control board.
C. Check and replace
transformer.
D. Check and adjust
electrical service.
2. No display on
display board.
A. Wire of display board with
control board fails to work.
B. Display board damaged.
C. Control board damaged.
D. Electricity is interrupted.
A. Check and replace wire.
B. Replace display board.
C. Replace control board.
D. Check electricity.
3. E1 Flashes
A. Wire of locating board with
control board fails to work.
B. Locating board damaged.
C. Mechanical driven failure.
D. Control board damaged.
E. Wire of motor with control
board is fault.
F. Motor damaged.
A. Replace wire.
B. Replace locating board.
C. Check and repair
mechanical part.
D. Replace control board.
E. Replace wire.
F. Replace motor.
4. E2 Flashes
A. Optocoupler on locating
board damaged.
B. Wire of locating board with
control board fails to work.
A. Replace locating board.
B. Replace wire.
C. Replace control board.