Mars Comfort-Aire Century VCD-SA Series Service Manual page 108

PC 03 Low pressure protection (for some models)
Outdoor unit malfunction
ec 0
PC 0L Low ambient temperature protection
Mismatch between the new and old platforms
FL 09
For other errors:
The display board may show a garbled code or a code undefined by the service manual. Ensure that this code is not a
temperature reading.
Troubleshooting:
Test the unit using the remote control. If the unit does not respond to the remote, the indoor PCB requires replacement.
If the unit responds, the display board requires replacement.
LED flash frequency:
2.2 Error Display on Two Way Communication Wired Controller
Display
Communication error between wire controller and indoor unit
EH 3
The other error codes displayed on the wire controller are same from those on the unit.
... ...
Malfunction or Protection
 Troubleshooting 5
Service Manual - VCDxxSA

TS33
TS35
TS42
TS48
Solution
TS49