EMI CAHV09 Installation, operation and maintenance manual - page 37
6.
When room temperature has been satisfi ed for at least
sixty (60) seconds and two (2) minute minimum on-
time has elapsed, compressor switches off.
7.
See Fan Operation see pg. 39.
8.
Place setpoint temperature above room temperature by
at least two (2) degrees.
9.
Compressor starts and, electric energizes after thirty
(30) second delay, thus two-stage heating.
10.
Electric heat runs for minimum of two (2) minutes and
until deviation between room temperature and setpoint
temperature is less than two (2) degrees.
11.
Electric heat switches off and heat pump (compressor)
takes over heating demand.
12.
Electric heater does not restart until three (3) minute
delay has elapsed.
13.
When room temperature is satisfi ed and two (2) minute
minimum run time has elapsed, compressor cycles off.
14.
Compressor does not restart until three (3) minute
delay has elapsed.
15.
See Fan Operation, see pg. 39.
Dry Mode
Dry mode removes humidity from air while maintaining
specifi c setpoint temperature. This is done by cycling
Cooling mode. Dry mode will NOT maintain specifi c
humidity level. Fan remains on continuously at low speed
while in Dry mode.
Dry mode operation, turn unit on via POWER button.
1.
Select Dry mode via MODE button.
2.
Room temperature and setpoint temperature are
displayed.
3.
Press either UP or DOWN ARROW buttons to change
setpoint temperature.
4.
Setpoint temperature changes one degree with each
successive press of UP or DOWN ARROW buttons.
Holding button down will change temperature rapidly.
5.
Place setpoint temperature at desired room
temperature.
6.
Depending on difference between room temperature
and setpoint temperature, compressor will either
remain on continuously , cycle on/off, or remain off.
7.
If room temperature is greater than setpoint
temperature by more than two (2) degrees, unit runs
Cooling mode continuously .
8.
If room temperature is within ± two (2) degrees of
setpoint, unit cycles cooling on seven (7) minutes and
off seven (7) minutes to remove humidity from air
while not over cooling room.
9.
If room temperature is less than setpoint temperature
by more than two (2) degrees, cooling remains off.
HAND HELD CONTROLLER OPERATION
Auto Changeover Mode
Auto Changeover mode (ACO), unit must have heat source.
Control must fi rst be confi gured properly, Heat source –
ON. See Figure 42, Page 33.
Auto Changeover mode, cassette will operate in either Cool-
ing mode or Heating mode. Control selects mode of opera-
tion dependent upon setpoint temperature, room tempera-
ture and differential setting selected in Confi guration mode.
Auto Changeover mode, turn unit on via POWER button.
1.
Select Auto mode via MODE button.
2.
Room temperature and setpoint temperature are
displayed.
3.
Press either UP or DOWN ARROW buttons to change
setpoint temperature.
4.
Setpoint temperature changes one degree with each
successive press of UP or DOWN ARROW buttons.
Holding button down changes temperature rapidly.
5.
Place setpoint temperature below room temperature
by auto change over differential amount selected in
Confi guration mode.
6.
Compressor starts, unit runs cooling operation as
described in Cooling mode.
7.
If setpoint temperature is above room temperature
by auto change over differential amount selected in
Confi guration mode, unit runs heating operation as
described in Heat mode.
Set Time Mode
Clock used by 7-day programming mode.
1.
CLOCK button is used to enter or exit Set Time
mode.
2.
Set Time mode can be entered while control is in any
mode, including Off mode.
3.
To enter Set Time mode, press
CLOCK button for
three (3) seconds.
4.
Pressing PROGRAM
button advances to next item.
5.
Order is (1) Day of week, (2) Hour and (3) Minute.
6.
Time of day and day of week are changed using UP or
DOWN ARROW buttons.
7.
When
CLOCK button is pressed again or left idle for
twenty (20) seconds, control saves new settings and
returns to previous mode.
Unit will not automatically adjust for Day Light Sav-
ings time.
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