Samsung AZ09AATEA Service Manual page 13

Installation and Operating Instructions
3-2-9 About the safety devices
1. High temperature release : If temperature of the "indoor pipe thermistor" increases over the specified value during heating
operation, following operation is carried out for safety of the equipment.
A condition : temperature of "indoor pipe thermistor" is below 47˚C
B condition : temperature of "indoor pipe thermistor" is between 58˚C and 63˚C
C condition : temperature of "indoor pipe thermistor" is over 63˚C
1) High temperature release operation OFF condition = A condition
-> compressor ON (only in THERMO ON condition)
-> fan motor speed = set fan speed and cool blowing inhibiting operation
2) High temperature release operation ON condition = B condition
-> compressor ON
-> fan motor speed = Only HIGH operation regardless of previous selection
3) High temperature release operation ON condition = C condition
-> fan motor speed = set fan speed
-> compressor OFF
2. Low temperature release : If temperature of the "indoor pipe thermistor" decreases below the specified value during cooling
operation, following operation is carried out for safety of the equipment.
A condition : temperature of "indoor pipe thermistor" is below -1˚C for more than 6 minutes
B condition : temperature of "indoor pipe thermistor" is over 5˚C
1) Low temperature release ON condition = A condition
-> compressor OFF
-> fan motor "set fan speed"
2) Low temperature release OFF condition = B condition
-> The compressor is turned on if ON condition is satisfied after comparing the ambient temperature with the set
temperature
-> fan motor "set fan speed"
[Detailed description]
1) If temperature of "indoor pipe thermistor" is below -1˚C for more than 6 minutes, the fan motor continues to operate
at the set fan speed and the compressor is turned off(Low temperature release operation)
2) If temperature of the "indoor pipe thermistor" increases over +5˚C during low temperature release operation, normal
operation is recovered
: compressor ON, fan mtor set fan speed -> Low temperature release operation OFF
3) If temperature of "indoor pipe thermistor" increases over 0˚C during counting 6 minutes below -1˚C, the counter is
reset.
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