Sanyo MDF-393, Service Manual

5. Error 

codes 

E01:  Temp. sensor is open circuited
E02:  Temp. sensor is short circuited
E03:  Cascade sensor is open circuited
E04:  Cascade sensor is short circuited
E05:  Filter sensor is open circuited
E06:  Filter sensor is short circuited
E07:  AT sensor is open circuited
E08:  AT sensor is short circuited
E09:  Battery switch is off position
E10:  Compressor temperature is abnormal

(1) Temp. sensor 
Open circuit (E01):  

When temperature in PT sensor is equal or higher than 50

㷄

, E01 and 

50

㷄

are displayed alternately and the buzzer beeps intermittently and 

remote alarm contact activates. 
Compressor keeps forcibly running. 
Press BUZZER key to stop the buzzer beeping. 

Short circuit (E02):  

When temperature in PT sensor is equal or lower than -170

㷄

, E02 and 

-170

㷄

~ -180

㷄

are displayed alternately and the buzzer beeps 

intermittently and remote alarm contact activates. 
Compressor keeps forcibly running.
Press BUZZER key to stop the buzzer beeping.

(2) Cascade sensor 
Open circuit (E03):  

When temperature in cascade sensor is equal or higher than 60

㷄

, E03 

and chamber temperature are displayed alternately, the buzzer beeps 
intermittently and remote alarm contact activates. 
High side compressor is forcibly turned on and low side compressor is 
turned off. 
Press BUZZER key to stop the buzzer beeping. 

Short circuit (E04):  

When temperature in cascade sensor is equal or lower than -65

㷄

, E04 

and chamber temperature are displayed alternately, the buzzer beeps 
intermittently and remote alarm contact activates. 
High side compressor is forcibly turned on and low side compressor is 
not controlled in any cascade temperature. 
Press BUZZER key to stop the buzzer beeping. 

(3) Filter sensor 
Open circuit (E05):  

When the temperature in filter sensor is equal or higher than 130

㷄

, E05 

and chamber temperature are displayed alternately, the buzzer beeps 
intermittently and remote alarm contact activates. 
High side compressor is forcibly turned off. 
Press BUZZER key to stop the buzzer beeping. 

Short circuit (E06):  

When the temperature in filter sensor is equal or lower than -60

㷄

, E06 

and chamber temperature are displayed alternately, the buzzer beeps 
intermittently and remote alarm contact activates. 
Press BUZZER key to stop the buzzer beeping. 

(4) AT sensor 
Open circuit (E07):  

When the temperature in AT sensor is equal or higher than 60

㷄

, E07 

and chamber temperature are displayed alternately, the buzzer beeps 
intermittently and remote alarm contact activates. 
Press BUZZER key to stop the buzzer beeping. 

Short circuit(E08):  

When the temperature in AT sensor is equal or lower than -60

㷄

, E08 

and chamber temperature are displayed alternately, the buzzer beeps 
intermittently and remote alarm contact activates. 
Press BUZZER key to stop the buzzer beeping. 

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