Hoshizaki ROX-20TA-U - Manual (Page 33)

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U8AA5540012
The water softener also needs salt for regeneration. Always add a proper amount of salt into
the water softener. Give the user sufficient instructions to add salt periodically.
[e] Cartridge Filter [No. 16]
Replace the cartridge filter when the pressure gauge readings on the primary side of the
water softener and on the secondary side of the cartridge filter differ by 0.1MPa (1.0kgf/cm
2 )
or more.
2. SERVICE DIAGNOSIS
When the unit shuts down with the Service Call Lamp lighting:
Lamp
Service
Call
Service
Call
Code
E11
E14
E42
Problem
After water valve
opens, flow rate
sensor does not
detect water flow
for 3 sec.
After water valve
closes, flow rate
sensor detects
water flow for 3
sec.
Metering pump
stroke speed
exceeds 360spm
for 60 sec.
Check
Water Supply
Water Outlet
Connecting Hose
Alkaline Water Line
Flow Switching Valve
Water Valve
Flow Rate Sensor
Programmable
Controller
Water Valve
Flow Rate Sensor
Salt Water Tank
Set Voltage
Set Amperage
Possible Cause
Cut off.
Blocked.
Crushed or bent.
Scaled up.
Clogged.
Clogged.
Connector in bad
contact.
Defective.
Clogged.
Connector in bad
contact.
Defective.
Water valve output
contact defective.
Flow rate sensor
input defective.
Clogged.
Defective.
Salt water too thin.
Too low.
Too high.
Remedy
Recover.
Unblock.
Release stress.
Clean.
Unclog.
Unclog.
Improve contact.
Repair or replace.
Unclog.
Improve contact.
Repair or replace.
Repair or replace.
Repair or replace.
Unclog.
Repair or replace.
Thicken.
Raise.
Reduce.