Alignment And Adjustments; Error Mode And Check Method - Samsung RHF025EE Service Manual

3. Alignment and Adjustments

3-1 Error Mode and Check Method

Error No Error Mode
E108 Address setting duplication error
Indoor temperature sensor
E121
error(SHORT/OPEN)
E139 CO2 sensor error(SHORT/OPEN)
E162 Indoor EEPROM H/W error
E163 Indoor option setting error
E183 Outdoor Humidity Sensor Error(ERV)
Thermal fuse open error in power ther-
E198
minal block
System down caused by communica-
E202
tion error
Outdoor temperature sensor
E221
error(SHORT/OPEN)
Prohibition of operation under outside
E490
& indoor temperature 0 degrees
E561 Supply air(SA) fan motor error
E562 Exhaust air(EA) fan motor error
E654 Inside damper error
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· Check the overlapping MAIN address within same repeater.
· Check connector disconnection of CN41 & connection conditions.
Check a voltage of both ends CN41 PIN#1,2 (10
A Check of Indoor temperature is possible when KEY2 switch is entered 3 times.
· Check connector disconnection of
CO2
A Check of sensor value is possible when KEY2 switch is entered 5 times.
· Check connection conditions of EEPROM SUB PBA.
· Need to reset option.
· Check connector disconnection of humidity sensor and connection conditions.
· A Check of outdoor humidity value is possible when KEY2 switch is entered 8 times.
Set operates normall regardless of error.
· Check wire connection conditions of CN140 connector.
· Check conditions of wire connected power terminal block.
(occurrence of error at open)
· Check disconnection of communication wire.
· Check connector disconnection of CN41 and connection conditions.
· Check a voltage of both ends CN41 PIN#3,4 (10
A Check of indoor temperature is possible when KEY2 switch is entered 4 times.
· Set stop operates normally when indoor and outdoor temperature is under 0 degrees.
· Prohibition of operation for set protection.
· Check connector disconnection of CN74 and connection conditions.
· A Check of supply air fan rpm is possible when KEY2 switch is entered twice.
· Check connector disconnection of CN73 and connection conditions.
· A Check of exhaust air fan rpm is possible when KEY2 switch is entered once.
· Check connector disconnection of CN72,CN52 and connection conditions.
Measures
at 25 degrees)
CO2 sensor and connection conditions.
at 25 degrees).
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