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B. Error Codes
In the event of operation outside of normal parameters, the control board identifi es the issue
with an error code. For further service information, see "III.C. Service Flow Charts."
1. Error Code Table
Error
Code
Problem Operation Reset
A1
Wash Tank Auto Fill Error
Water level in wash tank does not reach
water level sensor after rinse pump has
run preset number of cycles.
Unit stops Use "ON/OFF" button to turn the unit
off and then back on.
A2
Internal Booster Tank Auto Fill Error
In auto fi ll cycle, internal booster tank
water level fl oat switch does not close
within 10 minutes after inlet water valve is
opened.
Whole unit
stops
Use "ON/OFF" button to turn the unit
off and then back on.
A3
Wash Tank Water Level Error
Water level in wash tank goes below
water level sensor in "READY" mode or in
"STANDBY."
Auto fi ll cycle
starts
After auto fi ll cycle ends, alarm resets.
o1
Internal Booster Tank Water Level Error 1
(Internal Booster Tank Water Level Float
Switch Closed)
Both internal booster tank water level fl oat
switch and internal booster tank backup
water level fl oat switch have remained
closed for 1 minute.
Normal
(internal
booster tank
heaters off)
Use "ON/OFF" button to turn the unit
off and then back on.
o2
Internal Booster Tank Water Level Error 2
(Internal Booster Tank Water Level Float
Switch Open)
Internal booster tank water level fl oat
switch is open and internal booster
tank backup water level fl oat switch has
remained closed for 1 minute.
Normal
(internal
booster tank
heaters off)
Use "ON/OFF" button to turn the unit
off and then back on.
H1
Wash Tank Thermistor Error (short)
Thermistor senses abnormal temperature
(at or above 231°F (110°C)).
Normal
(wash tank
heaters off)
After replacing failed component,
alarm resets.
H2
Wash Tank Thermistor Error (open)
Thermistor senses abnormal temperature
(at or below -6°F (-21°C)).
Normal
(wash tank
heaters off)
After replacing failed component,
alarm resets.
H3
Internal Booster Tank Thermistor Error
(short)
Thermistor senses abnormal temperature
(at or above 231°F (110°C)).
Normal
(internal
booster tank
heaters off)
After replacing failed component,
alarm resets.