Hammer Cassy Series, Manual

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
If Ti >38

C, when MTV is on, AUX1 is closed and Indoor fan runs at set speed.

If indoor coil temperature sensor is damages, pre-heat time is set for 2 minutes and Indoor fan runs at
set
speed.
2.G.1 Pre-Heat-------TZ-KM-V6.2 C(D) FOR KM4 WITH ELECTRICAL HEATER.

Indoor fan will turned on after the electrical heater is turned on 30S.
2.G.2 Post-Heat -------TZ-KM-V6.2 FOR KM4 WITHOUT ELECTRICAL HEATER.

If Ti > 38

C, when MTV is off, indoor fan remains on at set speed and AUX1 is opened.

If 35

C <= Ti< =38

C, when MTV is off, AUX1 is opened. Indoor fan keeps original state.

If Ti < 35

C, when MTV is off, AUX1 is opened. Indoor fan stops.

If indoor coil temperature sensor is damages, post-heat time is set for 3 minutes with indoor fan
running at set speed.
2.G.2 Post-Heat -------TZ-KM-V6.2 C(D) FOR KM4 WITH ELECTRICAL HEATER.

Indoor fan will turned off after the unit is turned off 20S.
2.G.3 Protection of indoor coil

If Ti >= 75

C, MTV is turned off, indoor fan remains on and AUX1 is opened. Indoor fan at high
speed.

If Ti < 70

C, MTV is turned on, indoor fan remains on and AUX1 is closed. Indoor fan at set speed.
2.H DEHUMIDIFICATION MODE
If Tr>= 25

C, MTV will be ON for 3 minutes and OFF for 4 minutes.
If 16

C <= Tr< 25

C, MTV will be ON for 3 minutes and OFF for 6 minutes.
If Tr <16

C, MTV will be turned off.
2.I AUTO HEAT-DEHUMIDIFICATION-COOL MODE
In auto mode, the set temperature of the system is 24

C and the indoor fan runs in auto fan mode.
If Tr <21

C, the unit will operate in heat mode.
If Tr >25

C, the unit will operate in cool mode.
If 21

C≤ Tr ≤25

C, the unit will operate in dehumidification mode.
Once the unit is turned on in auto mode, it will operate in that mode and will not changeover.
If the unit has been turned off for 2 hours, when turning on the unit, it will select the operating mode
depending on the room temperature.
2.J AUXILIARY CONTACTS

Cool mode (AUX2)
AUX2 is closed when MTV is on (in normal operation). AUX2 is opened when MTV is off or
protection of indoor coil is operating.

Fan mode (AUX1 and AUX2)