L0~L9 10H4 / 20H4: Compressor Inv Module Protection; Error Display; Applicable Models - Carrier 38VMA Series Service Manual

Outdoor unit for variable refrigerant flow (vrf) heat pump system
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z. L0~L9 10H4 / 20H4: Compressor INV Module Protection

Error Display:

For the L0~L9 error, the digital display on the main board is identical to that in standby status. Check to see each error
code. See the following table for more information.
If L0~L9 protection occur 3 times within a 60 minute period, 10H4 or 20H4 will be reported on the digital display of the
main board.
Compressor A Module Protection
Red LED always lights
on
LED5

Applicable Models:

38VMA***HDS5-1 (208/230V-3Ph-60Hz)
38VMA***HDS6-1 (460V-3Ph-60Hz)
Green LED flashes
Red LED always lights
quickly
LED4
Compressor B Module Protection
Green LED flashes
on
LED7
quickly
LED6
68

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