26
B. Error Codes
In the event of operation outside of normal parameters, the control board identi
fi
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 for preset time.
Whole unit
stops
Use "ON/OFF" button to turn the unit
off and then back on.
A2
Booster Tank Auto Fill Error
In auto
fi
ll cycle, booster tank water level
fl
oat switch does not close within 10
minutes (or 20 minutes in "READY" mode)
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 during
operation.
Supplementary
fi
ll cycle starts
(Whole unit
stops if water
level sensor
does not
close after two
cycles)
After supplementary
fi
ll cycle ends,
alarm resets.
(If whole unit stops, use "ON/OFF"
button to turn the unit off and then
back on.)
o1
Booster Tank Water Level Error 1 (Booster
Tank Water Level Float Switch Closed)
Both booster tank water level
fl
oat switch
and booster tank backup water level
fl
oat
switch have remained closed for 1 minute.
Whole unit
stops
Use "ON/OFF" button to turn the unit
off and then back on.
o2
Booster Tank Water Level Error 2 (Booster
Tank Water Level Float Switch Open)
Booster tank water level
fl
oat switch is
open and booster tank backup water
level
fl
oat switch has remained closed for
1 minute.
Whole unit
stops
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
Booster Tank Thermistor Error (short)
Thermistor senses abnormal temperature
(at or above 231°F (110°C)).
Normal
(Booster tank
heaters off)
After replacing failed component,
alarm resets.
