LGRED Installation Manual

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MULTI F / MULTI F MAX with LGRED Outdoor Unit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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MULTI
F
MAX
MULTI
F
WITH
Figure 130: Ceiling Cassette Display.
ERROR CODE TABLES
Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and
service troubleshooting of the Multi F / Multi F MAX with LGRED product.
Decoding Four-Way Ceiling Cassette Error Codes
• Error codes on the LED flash ON / OFF as presented in the table below.
• If two or more errors occur simultaneously, the highest priority error code is displayed.
• After error is resolved, the error code is simultaneously released and does not display.
• To operate the system again after an error code occurs and has been resolved, cycle the power.
• Error code displays differ depending on model.
Error
Code
Description Cause
1 Indoor unit air temperature sensor error
Indoor unit air temperature sensor is disconnected or shorted.
2 Indoor unit inlet pipe temperature sensor error Indoor unit inlet pipe temperature sensor is disconnected or shorted.
3
Communication error between wired remote controller and indoor
unit
Indoor unit PCB is not receiving communications signal from wired
remote controller.
4 Drain pump error. Drain pump is malfunctioning.
5 Communication error between indoor unit and outdoor unit
Indoor unit communications PCB is not receiving signal from outdoor
unit communications PCB.
6 Indoor unit outlet pipe temperature sensor error
Indoor unit outlet pipe temperature sensor is disconnected or shorted.
9 Indoor unit EEPROM error Serial number on EEPROM of indoor unit is 0 or FFFFFF.
10 Indoor unit fan motor operation error
Fan motor connector has been disconnected. Indoor fan motor lock
has failed.
Table 43: Four-Way Ceiling Cassette Indoor Unit LED Indications.
Four-Way Ceiling Cassette Indoor Unit Error Indicator
Description LED Color
Cooling Mode Green
Heating Mode Green
Time to Clean Filter (When Unit is Operating In Cooling or Heating Mode) Yellowish Green
Time to Clean Filter (When Unit Is Not Operating) Orange
Hot Start or Defrost Mode before Starting Heating Mode Green
When Reservation Set Is On Yellowish Green
Table 44: Four-Way Ceiling Cassette Indoor Unit Error Codes.
LED
Forced Operation
Button