Midea ATOM B Series Service Manual page 69

Atom B Series VRF 50/60Hz
2.19 P2: Suction pipe low pressure protection (For all models)
2.19.1 Digital display output
P2
2.19.2 Description
 Suction pipe low pressure protection.
 The system stops running.
 Error code is displayed on outdoor unit PCB.
2.19.3 Trigger / recover condition
 Trigger condition: Suction pressure ≤ 0.05MPa.
 Recover condition: Suction pressure ≥ 0.15MPa.
 Reset method: Resume automatically.
2.19.4 Possible causes
 Insufficient refrigerant.
 Low pressure side blockage.
 Poor evaporator heat exchange.
 Main PCB damaged.
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