Carrier 42UQV050M Series, Service Manual, Page: 39 / 106

Item
Operation flow and applicable data, etc. Description
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38
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14. Hi-POWER
([ ] button on the remote controller
is pressed)
When [Hi-POWER] button is pressed while the
indoor
unit is in Auto, Cooling or Heating operation,
Mode
Hi POWER mark is indicated on the display of the
remote controller and the unit operates as follows.
1. Automatic operation
• The indoor unit operates in according to the
current operation.
2. Cooling operation
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
• The preset temperature drops 1 degree
(The value of the preset temperature on the
3. Heating operation
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
• The preset temperature increases 2 degree
(The value of the preset temperature on the
4. The Hi-POWER mode can not be set in Dry
operation
FILE NO. SVM-13035
117°C
112°C
108°C
105°C
98°C
Control operation
Judges as an error and stops the compressor.
Reduce the compressor speed.
Reduce slowly compressor speed.
Keeps the compressor speed.
If the operation is performed with lower speed than one
commanded by the serial signal, speed is slowly raised
up to the commanded speed.
Operates with speed commanded by the serial signal.
1. Purpose
This function detects error on the
refrigerating cycle or error on the com-
pressor, and performs protective control.
2. Operation
• Control of the compressor speed
The speed control is performed as
described in the left table based upon
the discharge temperature.
15. Discharge temperature control
Td value
1
6
. QUIET mode When the [ ] button is pushed, the fan of
the indoor unit will be restricted the revolving
speed at speed L - until the [
] button is
pushed once again (cancel Quiet mode).
Quiet mode is the system which, control the
revolving speed of indoor fan to work constantly
at lower than speed L. In addition, noise level of
indoor unit is less than usual.
Remarks :
1. Quiet mode is unable to work in dry mode.
2. Quiet mode is appropriate to work with less
cooling load and less heating load condition.
Because of the fan speed L- may cause not
enough the cooling capacity or heating
capacity.