Actuator Control - Trane NTXWPH A Series Service Manual

ACTUATOR CONTROL

9
NTXMMX20A122AA
NTXMMX42A152AA
NTXMPH20A122AA
Relation between main sensor and actuator
Sensor
Discharge temperature
thermistor
Indoor coil temperature
thermistor
Defrost thermistor
Fin temperature
thermistor
Ambient temperature
thermistor
Outdoor heat exchanger
temperature thermistor
Capacity code
OBHT702
NTXMMX24A132AA
NTXMPH24A132AA
Purpose
Compressor
○
Protection
○
Cooling: Coil frost
prevention
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Heating: High pres-
sure protection
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Heating: Defrosting
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Protection
○
Control/Protection
Heating: Defrosting
(Heater)
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Cooling: Control/
Protection
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Control
NTXMMX30A132AA
NTXMPH30A132AA
Actuator
Outdoor
LEV 4-way valve
fan motor
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○ ○ ○
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70
NTXMMX36A142AA
2-way solenoid Defrost
valve heater
(NTXMMX42A152AA
(NTXMPH20A122AA
NTXMPH20A122AA
NTXMPH24A132AA
NTXMPH24A132AA
NTXMPH30A132AA)
NTXMPH30A132AA)
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○
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