Flow temp. controller
C-55
Troubleshooting
(FTC2)
Flow temp. controller
8
C-55
Water does not heat or cool well.
■
Clean the fi lter of water piping. (Flow is reduced when the fi lter is
dirty or clogged.)
■
Check the temperature adjustment and adjust the set temperature.
■
Make sure that there is plenty of space around the outdoor unit.
Water or vapor is emitted from the outdoor unit.
■
During cooling mode, water may form and drip from the cool pipes
and
joints.
■
During heating mode, water may form and drip from the heat ex-
changer of outdoor unit.
■
During defrosting mode, water on the heat exchanger of outdoor unit
evaporates and water vapor may be emitted.
The operation indicator does not appear in the remote controller dis-
play.
■
Turn on the power switch. “ ” will appear in the remote controller
display.
“
” appears in the remote controller display.
■
During Analog input system, “ ” appears in the remote controller
display and FTC2 operation cannot be started or stopped using the
remote controller.
■
During Legionella prevention mode, “ ” appears in the remote
controller display and FTC2 operation cannot be changed tartget
fl ow temp. (Fixed in 60 °C or 65 °C).
When restarting the outdoor unit soon after stopping it, it does not
operate even though the ON/OFF button is pressed.
■
Wait approximately 3 minutes. (Operation has stopped to protect the
outdoor unit.)
FTC2 operates without the ON/OFF button being pressed.
■
Is the on timer set?
Press the ON/OFF button to stop operation.
■
Is the FTC2 connected to an external signal?
The FTC2 is being controlled by an external signal; check the
source of the external signal.
■
Does “ ” appear in the remote controller display?
The FTC2 is being controlled by an external signal; check the
source of the external signal.
■
Has the auto recovery feature from power failures been set?
Press the ON/OFF button to stop operation.
FTC2 stops without the ON/OFF button being pressed.
■
Is the off timer set?
Press the ON/OFF button to restart operation.
■
Is the FTC2 connected to an external signal?
The FTC2 is being controlled by an external signal; check the
source of the external signal.
■
Does “ ” appear in the remote controller display?
The FTC2 is being controlled by an external signal; check the
source of the external signal.
Remote controller timer operation cannot be set.
■
Are timer settings invalid?
If the timer can be set,
WEEKLY
,
SIMPLE
, or
AUTO OFF
ap-
pears in the remote controller display.
“PLEASE WAIT” appears in the remote controller display.
■
The initial settings are being performed. Wait approximately 3 min-
utes.
■
If the remote controller is not only for FTC2, change it.
An error code appears in the remote controller display.
■
The protection devices have operated to protect the FTC2 and out-
door unit.
■
Do not attempt to repair this equipment by yourself.
Turn off the power switch immediately and consult your dealer. Be
sure to provide the dealer with the model name and information that
appeared in the remote controller display.
LED4 on FTC2 controller is lit.
■
Is Flow switch that is connected to IN3 (TB142, 5-6) operating?
Check the Flow switch.
■
Check the setting of Dip switch SW 3-6.
Set the logic of open/short correctly.
LED5 on FTC2 controller is lit.
■
Are TH1 and TH5 connected correctly?
LED5 is lit if TH1 and TH5 are connected incorrectly and the tem-
perature does not change.
■
Is 3-port valve installed correctly?.
LED5 is lit if 3-port valve is installed conversely and the temperature
of TH1 and TH5 do not change.
LED5 on FTC2 controller is blinking.
■
Is 3-port valve installed correctly?.
LED5 blinks if 3-port valve is installed conversely and the tempera-
ture of TH1 and TH5 do not change.
FTC2
To Next Page
Loading...
