AL01

Flood protection system activated

• Flood protection activated
• Check pressure switch
• Check wiring

AL02

Valve or connections – dishwasher will not fill with water

• Check water supply
• Check inlet hose
• Check water inlet valve
• Check wiring

AL03

Failure to drain

• Check for blockage
• Check outlet hose for blockage or obstruction
• Check drain pump
• Check wiring

AL04

Thermistor error detected – temperature sensor short, open circuit or out of range

• Check wiring to thermisrtor
• Check thermistor

AL05

Circulation pump blocked or faulty

• Check filters
• Check circulation pump motor for blockages
• Check main circulation pump

AL06

Fill timeout

• Check water supply
• Check inlet hose
• Check water inlet valve
• Check wiring

AL07

Not used

• This error code is not used on this range of Hotpoint Ultima dishwashers

AL08

Heating timeout

• Check wash heater
• Check thermistors

AL09

Software recognition error

• Reprogram the dishwasher EEPROM
• Replace electronic control module

AL10

Heating circuit error

• Check water heating element
• Check thermostats
• Check wiring

AL99

Communications error between boards

• Check wiring between control boards
• Replace electronic control module

H20

Fill timeout

• Check water supply
• Check inlet hose
• Check water inlet valve
• Check wiring