B. Error Codes

In the event of operation outside of normal parameters, the control board identifies the issue with an error code. For further service information, see "III.C. Service Flow Charts."

1. Error Code Table

Error

Problem

Operation

Reset

Code

 

Wash Tank Auto Fill Error

Unit stops

Use "ON/OFF" button to turn the unit

A1

Water level in wash tank does not reach

 

off and then back on.

 

 

 

water level sensor after rinse pump has

 

 

 

run preset number of cycles.

 

 

 

Internal Booster Tank Auto Fill Error

Whole unit

Use "ON/OFF" button to turn the unit

 

In auto fill cycle, internal booster tank

stops

off and then back on.

A2

 

 

water level float switch does not close

 

 

 

 

 

 

within 10 minutes after inlet water valve is

 

 

 

opened.

 

 

 

Wash Tank Water Level Error

Auto fill cycle

After auto fill cycle ends, alarm resets.

A3

Water level in wash tank goes below

starts

 

 

 

 

water level sensor in "READY" mode or in

 

 

 

"STANDBY."

 

 

 

Internal Booster Tank Water Level Error 1

Normal

Use "ON/OFF" button to turn the unit

 

(Internal Booster Tank Water Level Float

(internal

off and then back on.

 

Switch Closed)

booster tank

 

o1

Both internal booster tank water level float

heaters off)

 

 

 

 

 

 

 

switch and internal booster tank backup

 

 

 

water level float switch have remained

 

 

 

closed for 1 minute.

 

 

 

Internal Booster Tank Water Level Error 2

Normal

Use "ON/OFF" button to turn the unit

 

(Internal Booster Tank Water Level Float

(internal

off and then back on.

 

Switch Open)

booster tank

 

o2

Internal booster tank water level float

heaters off)

 

 

 

 

 

 

 

switch is open and internal booster

 

 

 

tank backup water level float switch has

 

 

 

remained closed for 1 minute.

 

 

 

Wash Tank Thermistor Error (short)

Normal

After replacing failed component,

H1

 

(wash tank

alarm resets.

Thermistor senses abnormal temperature

heaters off)

 

 

 

 

(at or above 231°F (110°C)).

 

 

 

Wash Tank Thermistor Error (open)

Normal

After replacing failed component,

H2

 

(wash tank

alarm resets.

Thermistor senses abnormal temperature

heaters off)

 

 

 

 

(at or below -6°F (-21°C)).

 

 

 

Internal Booster Tank Thermistor Error

Normal

After replacing failed component,

 

(short)

(internal

alarm resets.

H3

 

booster tank

 

 

Thermistor senses abnormal temperature

heaters off)

 

 

(at or above 231°F (110°C)).

 

 

28

Page 33
Image 33
Hoshizaki JWE-620UA-6B service manual Error Codes, Error Code Table