Operation Modes And Functions - Toyotomi CFT 35 INV-Ri Service Manual

TLC-I-2011.1

3. Operation Modes and Functions

3.1 Forced cooling
3.1.1 The forced cooling mode is controlled through "forced cooling" button on the outdoor PCB. The
sequence is shown as below when "forced cooling" button is pressed each time
Forced cooling mode
3.1.2 Forced Cooling mode
3.1.2.1 Under this mode, no remote control signal will be received.
3.1.2.2 The compressor is started up unconditionally and the rotating speed of indoor and outdoor
fans is set to be in high and forced cooling operation.
3.1.2.3 Under this mode, the buzzer will buzz twice with each lasting 0.5 second at 0.5 interval.
During the first 30 minutes of unconditional forced cooling operation, the operation
indicator will blink at 0.5Hz. In the process of switchover to manual action mode, the
buzzer buzzes for 0.5 second and the indicator is illuminated.
3.1.2.4 Under this mode, the corresponding protections are in effective (3- minute delayed start-up,
over current, outdoor protection and evaporator low temperature protection.).
Corresponding protection will act once any protection is in active.
Push "Forced cooling" button once to end this mode and enter the remote control pending
status. The buzzer will buzz for 1 second and the indicator turn off.
3.1.3 Push "Forced cooling" button to end this mode and switch over to REMOTE CONTROL mode.
3.2 Heating Mode
3.2.1 Four-way valve opens at once, while defrosting process closes.
3.2.2 Indoor Fan Action
3.2.2.1 Anytime remote switchover for fan speeds among high/medium/low/auto, (anti-cold air
function takes priority).
3.2.2.2 Anti-cold air:
Switchover between fan speed and fine tune can be set according to temperature of evaporator pipe .
Indoor exchanger temp. up
Indoor exchanger temp. down
During anti-cold air period, if indoor fan is shut down, then pre-heating/defrosting lamp is on. Once indoor
fan starts, pre-heating/defrosting lamp will be off.
3.2.3.3 Auto fan of indoor fan under heating mode.
Condition: (T =Indoor Temp.-Setting Temp.)
If current mode is low speed, in case of T<2° C, it changes to medium speed
If current mode is medium speed, in case of T<1° C, it changes to high speed
If current mode is high speed, in case of >2° C, it changes to medium speed
If current mode is medium speed, in case of >3° C, it changes to low speed.
3.3 Defrosting Mode (only available for heating mode)
3.3.1.1 Defrosting Conditions
3.3.1.1.1 Low temperature defrosting condition:
Accumulated operating time when temperature of outdoor heat exchanger coil T3 is below -2° C
(For 36KBtu/h & 48KBtu/h with 1 phase, it's 0° C) reaches up to over 40 minutes.
Condition
T= Indoor exchanger temp.
T<28° C
28° C <T<32° C
T>32° C
T> 30° C
15° C <T<30° C
T<15° C
Quit
Indoor fan speed
Off
Breeze
Setting fan speed
Setting fan speed
Breeze
Off
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