Control Of W-Eco Multi System; Main Operating Functions; Room Temperature Control; Fan Speed Control - Sanyo SPW-CR1503GDYH8 Technical Data & Service Manual

1. Main Operating Functions

1-1. Room temperature control

The thermostat turns ON / OFF with the following ∆T.
∆T = Room temp - Set temp
With body thermostat Room temp = (Body sensor) - (Shift temp*)
* Shift temp (valid while heating, only) is set when
shipped from factory as follows:
+4 deg: all type except wall mounted and floor
standing type
+2 deg: wall mounted type
0 deg: floor standing type
Shift temp can be set with Remote controller from +1
to +10 deg.
THERMO. ON
T
+1.0
0
-1.0
Cooling
Supplement:
3
(1) After thermo.-on, it will not thermo.-off for 3
minutes due to ∆T .
However, for heating, if the indoor coil E2
temperature ] 64 ˚C, it will thermo.-off within 5
minutes (over load protection).
(2) After thermo.-off, it will not thermo.-on for 1 ~ 3
minute.
For cooling or dehumidifying, it will not thermo.-
on if the indoor coil E1 or E2 temperature < 2 ˚C.
(3) When the system is set for test operation, it will
not thermo.-off for 60 minutes (forced thermo.-
on).

1-2. Fan speed control

(1) Control in special conditions
Reverse cycle
start control
Oil recovery control • Heating : OFF
Reverse cycle
defrost control
Switch over control • When switching over from cooling,dry,
THERMO. OFF
T
+1.0
0
-1.0
Heating
• Cooling, dry operation : Set fan speed
• OFF or LL
or fan to heating : OFF
• When switching over from heating to
cooling, dry, or fan: Set fan speed

Control of W-ECO MULTI SYSTEM

(2) Fan operation : Set fan speed
(3) Dry operation : L
(4) When thermo. OFF
Cooling
* Operation of L or LL cycle when comp. on.
Heating LL
3 min.
* Operation of LL when comp. off.
* For all units except wall mounted type.
In case of wall mounted type, only LL airflow blows
when thermo. OFF.
(5) When thermo. ON
Cooling operation
634_8132
Heating operation
¶ Fan speed auto control : Controlled by ∆T (Room
temp - Set temp)
T(deg)
3
2 H
1 Me
L
Fan speed changed
Cooling
every min.
Supplement
The following heating controls receive priority, while
heating.
III - 2
Set fan speed
L L
LL
LL
3 min. 3 min.
1 min.
1 min.
• Auto setting : Conforms to the
procedure of "Fan speed auto
control"
• Regular fan speed setting :
Conforms to the set fan speed
• At start of operation : Con-
forms to the procedure of
"Cold draft prevention"
• Later
- Fan speed auto setting :
Conforms to the procedure
of "Fan speed auto control"
- Regular fan speed setting :
Conforms to the set fan
speed
T(deg)
0 L
-2 Me
-4 H
Heating
TD831077
1278_X_I