Erie water treatment SOF-WHF series, Technical Manual, Page: 11 / 24

TROUBLESHOOTING
Page 11
PROBLEM CAUSE SOLUTION
Untreated water to
service Open or defective bypass Close or replace bypass
Appliance in regeneration Wait until regeneration finishes or manually
advance regeneration to end
Excessive water usage Initiate regeneration manually
Change in raw water hardness Verify composition of incoming untreated water
and adjust regeneration frequency accordingly
Appliance fails to regenerate Refer to problem “Appliance fails to regenerate”
Appliance fails to backwash properly Refer to problem “Appliance fails to backwash
properly”
Valve body and timer out of synchronisation Synchronize valve body and timer
Decreasing filter capacity of filter media Clean or replace filter media
Loss of filter media Refer to problem “Loss of filter media”
Leak at riser tube Verify that riser tube is seated correctly and is not
cracked
Low levels of
contaminant in treated
water Bypass not completely closed Close bypass
Excessive service flow rate Lower service flow rate
Increase filter capacity by increasing volume of filter
media
Leak at riser tube Verify that riser tube is seated correctly and is not
cracked
Appliance fails to
regenerate Faulty electrical supply Verify electrical service (fuse, transformer,...)
Defective PCB Replace PCB
Defective drive motor Replace drive motor
Regeneration frequency not programmed Program regeneration frequency
Loss of water pressure Mineral or iron build-up in resin tank Clean resin bed and control valve; increase
regeneration frequency
Plugged lower and/or upper distributor Verify that distributors are free of debris
Crushed lower and/or upper distributor Replace distributor(s)
Drain line from control
valve flows
continuously Appliance in regeneration Wait until regeneration finishes or manually
advance regeneration to end
Faulty electrical supply Verify electrical service (fuse, transformer,...)
Defective drive motor Replace drive motor
Defective micro switch Replace micro switches
Defective PCB Replace PCB
Valve body and timer out of synchronisation Synchronize valve body and timer
Loss of filter media Lower and/or upper distributor damaged Replace distributor(s)
Leak between riser tube and upper distributor Verify that riser tube is seated correctly and is not
cracked
Appliance fails to
backwash properly Low operating pressure Check operating pressure; must be higher than 2,0
bar
Insufficient water supply Check water supply (flow rate/dynamic pressure)
Restricted drain line Verify drain line for kinks or restrictions
Excessive build-up of impurities in pressure tank Clean or replace filter media and control valve;
increase regeneration frequency
Plugged backwash flow control Clean or replace backwash flow control
Plugged top or bottom distributor Verify that top and bottom distributor are clean and
slots are not clogged by iron or other impurities
Filter media is completely ‘caked’ (solid block) Replace filter media and reduce regeneration
interval
Control valve cycles
continuously Defective micro switch Replace micro switches