Heating Mode; Auto-Mode; Drying Mode; Forced Operation Function - Bosch CLIMATE 5000 Service Manual

Product Features
Indoor Fan Control
• In cooling mode, the indoor fan operates continuously. The fan
speed can be set to high, medium, low, or auto.
• If the compressor ceases operations when the configured tempera-
ture is reached, the indoor fan motor operates at the minimum or
configured speed.
Outdoor Fan Control
• The outdoor unit will be run at different fan speed according to T4
and compressor frequency.
• For different outdoor units, the fan speeds are different.
Condenser Temperature Protection
When condenser temperature is more than setting value, the compressor
ceases operations..
Evaporator Temperature Protection
When evaporator temperature drops below a configured value, the
compressor and outdoor fan cease operations.
3.1.6

Heating Mode

Compressor Control
∆T means the temperature difference between indoor room temperature
T1 and set temperature Ts: ∆T =T1-Ts
• When ∆T > 0K, the compressor ceases operation.
• When ∆T < -1.5K, the compressor continues operation.
• When the AC is operating in mute mode, the compressor operates
at a low frequency.
• When the current exceeds the preset value, the current protection
function activates and the compressor ceases operation.
Indoor Fan Control:
• When the compressor is on, the indoor fan can be set to high/medi-
um/low/auto. And the anti-cold wind function has the priority.
• When indoor unit coil temp. is low, the anti-cold air function will
start and indoor fan motor will run at low speed, the speed can't be
changed, when the temp. is lower than setting value, the indoor fan
motor will stop.
• When the indoor temp reaches the setting temp., the compressor
will stop, the indoor fan motor will run at the minimum speed or
setting speed.(The anti-cold air function is valid).
Outdoor Fan Control:
• The outdoor unit will be run at different fan speed according to T4
and compressor frequency.
• For different outdoor units, the fan speeds are different.
Defrosting mode
• The unit enters defrosting mode according to the temperature value
of T3 and T4 as well as the compressor running time.
• In defrosting mode, the compressor continues to run, the indoor
and outdoor motor will cease operation, the defrost light of the
indoor unit will turn on, and the "
• If any one of the following conditions is satisfied, defrosting ends
and the machine switches to normal heating mode:
• T3 value rises 1K above parameter TCDE.
• T3 value stays 2K above parameter TCDE for 80 seconds.
• Unit runs for 15 minutes consecutively in defrosting mode.
10
" symbol is displayed.
Evaporator Temperature Protection
When the evaporator temperature exceeds a preset protection value,
the compressor ceases operations.
3.1.7

Auto-mode

• This mode can be selected with the remote controller and the
setting temperature can be changed between 17°C~30°C.
• In auto mode, the machine selects cooling, heating, or fan-only
mode on the basis of ∆T (∆T =T1-Ts).
∆T
∆T> 2K (Kelvin)
-2K≤∆T≤2K
∆T<-2K
Table 6.
Heating*: In auto mode, cooling only models run the fan
• The louver operates same as in relevant mode.
• If the machine switches mode between heating and cooling, the
compressor will keep stopping for certain time and then choose
mode according to T1-Ts.
• If the setting temperature is modified, the machine will choose
running function again.
3.1.8

Drying mode

• Indoor fan speed is fixed at breeze and can't be changed. The louver
angle is the same as in cooling mode.
• All protections are active and the same as that in cooling mode.
3.1.9

Forced operation function

• Forced cooling mode:
The compressor and outdoor fan continue to run and the indoor fan runs
at low speed. After running for 30 minutes, the AC will switch to auto
mode with a preset temperature of 24°C.
• Forced auto mode:
Forced auto mode operates the same as normal auto mode with a preset
temperature of 24°C.
The unit exits forced operation when it receives the following signals:
• Switch on
• Switch off
• Timer on
• Timer off
• Changes in:
• mode
• fan speed
• sleeping mode
• Follow me

3.1.10 Sleep function

• The sleep function is available in cooling, heating, or auto mode.
• The operational process for sleep mode is as follows:
• When cooling, the set temperature rises 1°C (to not higher than
30°C) every hour. After 2 hours, the set temperature stops rising
and the indoor fan is fixed at low speed.
• When heating, the set temperature decreases 1°C(to not lower
than 17°C) every hour. After 2 hours, the set temperature stops
CLIMATE 5000 RAC SINGLE SPLIT (R32) – 6720894076 (2019/08)
Running mode
Cooling
Fan-only
Heating*