Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Service Manual download pdf (Page 37)

Repair Section

Control

panel

display

turns on

Control

Panel

display

shows error

codes.

1. Display code “FL”. Drain tanks (optional) are

filled with the drain water.

Discharge the drain water.

Improper drain switch

connection.

Check connection.

Defective drain switch. Replace drain switch.

2. Display code “AS”. Improper routing of drain

hose.

Repair drain hose, then reset

unit.

To RESET: Press ON/OFF

and HI/LO buttons on the

control box simultaneously

for 5 sec.

Defective condensate pump. Repair or replace

condensate pump, then reset

unit.

To RESET: Press ON/OFF

and HI/LO buttons on the

control box simultaneously

for 5 sec.

Missing jumper connector. Connect jumper connector.

3. Display code “RT”. Improper room thermistor

connection.

Check connection.

Defective room thermistor

(short or open).

Replace room thermistor.

4. Display code “FT”. Improper freeze protection

thermistor connection.

Check connection.

Defective freeze protection

thermistor (short or open).

Replace freeze protection

thermistor.

5. Display code “HP”. Improper high pressure

switch connection.

Check connection.

Defective high pressure

switch (short or open).

Replace high pressure

switch.

See “Stops after running a while” of Troubleshooting on

page 38.

6. Display code “ALRM”. Turn the input signal on and

continue it.

1)Check external input

signal.

2) Reset the system.

To RESET: Press ON/OFF

and HI/LO buttons on the

control box simultaneously

for 5 sec.

7. Display code “FZ”. See “Stops after running a while” of Troubleshooting on

page 38.

Symptom

Possible Cause

Remedy

Checking Area Cause

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Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Service Manual Page 37

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