16
Delayed switch-off of interior fan
The interior fan will continue to function for one minute after
the stop order.
This is to permit dissipation of the energy accumulated in the
interior interchanger and represents an energy saving.
Optionally, at the jobsite, this option can be deactivated,
leaving the JP-20 option of the module open.
Other
- Connector for computer switching.
- Possibility of lowering timer to 2 minutes.
- Buttons:
Test.
Lowers delay.
Direction for communication.
Reset. Restarts the control.
Filters. Delete dirty filter counter.
- Leds:
Standby.
Indicates compressor delay.
Filters.
Dirty filters.
Reset.
Self-diagnosis and reset Led.
Operation
Summer cycle
In summer functioning the 4-way valve is energised.
In the corresponding figure the circuit followed by the refrig-
erant is shown.
Winter cycle
On winter cycle the discharge gas goes to the indoor coil
which operates as the condenser.
The outdoor coil becomes the evaporator.
Reversing valve is deactivated. Refrigerant's circuit is shown
in figure.
Detail module internal connections with exits
to the connector
Function of the pins
Actions according to state of the probe
3
2
1
6
8
4
9
5
7
12
10
11
ENTRY
EXIT
(G)
(Y)
11
2
9
3
10
8
(R)
12
(B)
6
(W)
1
6
7
24V LINE
(G1) FAN
COMPRESSOR
DISCHARGE RELAY
INTERIOR HEATER
DUCT HEATER
NO
YES
INTERIOR FAN FUNCTION
DURING DEFROST
JP19
DISCHARGE TEMPERATURE LOCK-OUT
130 C
110 C
JP21
- SCALE OF BALANCE: 14,10,6,4,2,0,-2 and -4 °C.
- DELAY TIME START-UP: 2´,5´.
- TIME BETWEEN TWO DEFROSTS: 60´,30´,90´.
- LOW TEMPERATURE DISCONNECTION SCALE: -5,-10,-15,-20 °C.
THIS PLAQUE IS DELIVERED WITH 7 BRIDGES (PIN) AS FOLLOWS:
CLOSING CIRCUIT: 5´,60´,6 °C,-15 C,JP19, JP20 and NTC.
WITHOUT CLOSING CIRCUIT: JP21.
STOPPAGE INTERIOR FAN DELAYED
1 MINUTE AFTER COMPRESSOR, WITH
THERMOSTAT G TERMINAL DISCONNECTED
NO
YES
JP20
MICRO-93 PROBE (CODIGO 3785028 . 3785030 . 3785032)
NTC
MICRO-97 PROBE (CODIGO 3785050 . 3785052 . 3785054)
LIQUID PROBE
OPEN
- REPEATS DEFROST
CYCLES ACCORDING
TO TIME
DISCHARGE PROBE
CLOSED
- STOPPAGE OF COM-
PRESSOR (LOCK OUT)
EXTERIOR PROBE
OPEN
- CONNECTS THE
EMERGENCY
HEATER
- STOP THE COMPRESSOR
DEFROST
CLOSED
(
)
FOR 12 SECONDS
WITH LIQUID
TEMPERATURE < 4 °C
- BEGINS DEFROST
-
