Lennox LNIV2610 Service Manual page 16

Defrosting action:
For LNIV2610:
For other models:
Model
LNIV3510
LNIV5010
LNIV6510
30
FD FD1
60 70
90 100
8.4.3.5 Evaporator coil temperature protection
• T > TEH2°C, the compressor running frequency decreases to
2
the lower level and runs for 20 seconds.
• When the frequency decreases to F2 and the T is still over
2
TEH2°C for 3 minutes, the compressor will stop.
• T < 48°C or T stays in the range 48°C - TEH2°C for 6
2 2
minutes, the frequency will not be limited by T .
2
• T > 60°C, the compressor will stop and restart when
2
T < 48°C.
2
While TEH2 = 53°C for LNIV2610 and LNIV3510
TEH2 = 55°C for LINV5010 and LNIV6510
8.4.4 Auto mode
This mode can be chosen with the remote control and the setting
temperature can be changed between 17–30°C. In auto mode,
the machine will choose cooling, heating or fan-only mode
according to ▲T (▲T =T1-Ts).
▲
Running mode
T = T - Ts
1
▲
T > 1 °C Cooling
▲
°C Fan-only
-1 < T ≤ 1
▲
°C Heating
T ≤ -1
Indoor fan will run on auto in the relevant mode.
The louvre operates same as in relevant mode.
If the machine switches modes between heating and cooling, the
compressor will keep stopping for 15 minutes and then choose
the relevant mode according to T -Ts. If the temperature setting is
1
modifi ed, the machine will choose running function again.
8.4.5 Drying mode
8.4.5.1 Indoor fan speed is fi xed at breeze and can't be changed.
The louvre angle is the same as in cooling mode.
8.4.5.2 Compressor running rules
8.4.5.3 Low indoor room temperature protection
In drying mode, if room temperature is lower than 10°C, the
compressor will stop and not resume until room temperature
exceeds 12°C.
8.4.5.4 Evaporator anti-freezing protection, condenser high
temperature protection and outdoor unit frequency limit are active
and the same as that in cooling mode.
8.4.5.5 The outdoor fan operates the same as in cooling mode.
8.4.6 Forced operation function
8.4.6.1 Enter forced operation function:
When the machine is off, pressing the touch button will change
the setting to forced auto mode. Pressing the button again within
5 seconds will change the setting to forced cooling mode. In
forced auto, forced cooling or any other operation mode, pressing
the touch button will turn off the machine.
8.4.6.2 In forced operation mode, all general protections and
remote control are available.
8.4.6.3 Operation rules:
Forced cooling mode:
The compressor runs at F2 frequency and indoor fan runs as
breeze. After running for 30 minutes, the machine will turn to auto
mode as 24°C setting temperature.
Forced auto mode:
The action of forced auto mode is the same as normal auto mode
with 24°C setting temperature.
8.4.7 Timer function
8.4.7.1 Timing range is 24 hours.
8.4.7.2 Timer on. The machine will turn on automatically when
reaching the set time.
8.4.7.3 Timer off. The machine will turn off automatically when
reaching the set time.
8.4.7.4 Timer on/off. The machine will turn on automatically when
reaching the set "on" time, and then turn off automatically when
reaching the set "off" time.
8.4.7.5 Timer off/on. The machine will turn off automatically when
reaching the set "off" time, and then turn on automatically when
reaching the set "on" time.
8.4.7.6 The timer function will not change the unit's current
operation mode. If the unit is off, it will not start up after setting
the "timer off" function. When reaching the set time, the timer LED
will be off and the unit running mode will not be changed.
8.4.7.7 The set time is relative to the actual time.
8.4.8 Sleep function mode
8.4.8.1 Operation time in sleep mode is 7 hours. After 7 hours the
units leaves this mode and turns off.
8.4.8.2 Operation process in sleep mode is as follows:
When cooling, the set temperature rises 1°C (be lower than 30°C)
every one hour. 2 hours later the setting temperature stops rising
and indoor fan is fi xed at low speed.
When heating, the set temperature decreases 1°C (be higher than
17°C) every one hour. 2 hours later the set temperature stops
rising and indoor fan is fi xed at low speed.
8.4.8.3 Timer setting is available
8.4.8.4 When user uses timer off function in sleep mode (or sleep
function in timer off mode) and the set time is less than 7 hours,
sleep function will be cancelled when reaching the set time. If the
set time is more than 7 hours, the machine will not stop until it
reaches the set time in sleep mode.
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