Toshiba MMU-UP0071MH-UL Service Manual page 40

No. Item
25 Secondary
heating
Outline of specifications
Secondary heating can be used while heating operations are
performed.
<Control Outline (Normal Mode)>
1) If the difference between the indoor temperature and the
outdoor temperature is large while the air conditioner is
operating, turn ON the secondary heating.
2) This function is valid when the CODE No. (DN) [DC] is set to
"0001" (1°F(0.5°C)) to "0010" (9.0°F(5.0°C)) using the wired
remote controller, and the output to the external heating
source will turn ON if the room temperature satisfies the
condition.
3) The output will always stay ON while defrosting operations
are being performed.
TA
OFF
Ts
OFF
TA
H
OFF
TA
L
ON
4) The output can be turned on by the outdoor temperature
when CODE No. (DN) [C7] is set to "0001" (2°F(1°C)) to
"0010" (18°F(10°C)) using the wired remote controller.
OFF
TO
H
OFF
TO
L
ON
<Control Outline (Flip Mode)>
1) If the difference between the room temperature and the set
temperature is large while using secondary heating, run the
air conditioner.
2) This function is valid when the CODE No. (DN) [C5] is set to
"0001" (Flip mode) or the CODE No. (DN) [C7] is set to
"0001" (2°F(1°C)) to "0010" (18°F(10°C)) using the wired
remote controller, and when the output is switched ON when
the room temperature satisfies the conditions.
* The outdoor temperature determination is invalid whilst this
control is performed.
TA
OFF
Ts
OFF
TA
H
ON
TA
L
ON
a
b
ON
c
ON
b
ON
a
– 40 –
Remarks
TA : Temp.set air high
H
(= Ts - a )
TA : Temp.set air low
L
(= TA - b )
H
TO : Temp.set out high
H
TO : Temp.set out low
L
(= TO - c )
H