Mitsubishi Electric Fresh Master GUF-100RD3, Installation Instructions Manual

21

ENGLISH

11. Troubleshooting

Error code

0900

2600

2601

3602

4116

5101

5102

5103

5104

H0

–

–

See below for possible remedies when there is an error during test operation and [Check] followed by a 4-digit number is displayed on the remote
controller.

Error content

Test run

Drain error

Disconnected water sensor
connector

Damper motor error

Fan motor error

Indoor temperature sensor
error

Liquid pipe temperature
sensor error

Gas pipe temperature sensor
error

Outdoor temperature sensor
error

Booting system

Unable to register.

Operation display comes up
with the Remote controller,
however it turns off immedi-
ately.

Cause

• Is the test operation SW of either the fan,

humidifier solenoid valve or bypass damper
turned ON?

• Drain water is not properly discharged.

• Is there a leak from the permeable-film

humidifier?

• Is there a leak from the permeable-film

humidifier?

• When no problem is discovered after

checking the above items.

• Is the CN4D connector firmly connected?

• Is the relay connector between the PCB and

water sensor firmly connected?

• When no problem is discovered after

checking the above item.

• Is the CNL connector firmly connected?

• Is the connector of the damper motor

section firmly connected?

• Does the damper operate when the damper

motor is running?

• When no problem is discovered after

checking the above items.

• The motor continues to run when the

operation is stopped.

• Are the connectors of each thermister firmly

connected?

• Is each relay connector firmly connected?

• When no problem is discovered after

checking the above item.

• Has 10 minutes passed since system boot-

up?

• Has group registration been made?

• Has the Fresh Master address been

changed?

• When no problem is discovered after

checking the above items.

• The Fresh Master which is linked with air

conditioner, cannot be group registered
other than the interlock setting with the
Remote controller.

• Main power hasn’t supplied to the Fresh

Master.

Remedy

• Set the test operation SW (SW1-1, 7, 8) to

OFF.

• The body must be levelly installed.

The drain pipe must be installed with
gradient of more than 1/100.

• Fix the water leak.

• Replace the permeable-film humidifier.

• Replace the PCB (printed circuit board).

• Firmly connect the connector.

• Firmly connect the connector.

• Replace the PCB (printer circuit board).

• Firmly connect the connector.

• Firmly connect the connector.

• Replace the damper motor if not working.

• Replace the PCB (printed circuit board).

• Replace the PCB (printed circuit board).

• Firmly connect each connector.

• Firmly connect each connector.

• Replace the PCB (printed circuit board).

• After system boot-up, HO may flash for a

maximum of 10 minutes. However, this is
not a malfunction.

• Conduct group registration. If there is a

master system controller such as the central
controller, use the controller to conduct
group registration.

• If the Fresh Master main unit address has

been changed, conduct the group registra-
tion again.

• If HO continues to flash for more than 10

minutes after reregistering the group and
rebooting, replace the PCB (printed circuit
board).

• Change the setting of the SW3-1 switch and

reset the registration or register it inter-
locked.

• Supply Main Power.