Control And Test; Control Of Electric Backups; Sensor And Input Test Mode - Fujitsu WATERSTAGE WS A050DD6 Series Maintenance Document

Split system single phase type

1 Control and test

1.1

Control of Electric Backups

EJP lock signal (l 2920)
HEAT PUMP
DHW auxiliary
1st stage elec. auxiliary
2nd stage elec. auxiliary
Boiler backup
(1) subject to authorization by EX2
(2) provided the outdoor temperature is less than the setting on "2884 or 3700" (+2° from the beginning)
1.2

Sensor and Input Test Mode

LINE SENSOR
7700
7710
7712
7722
7723
7724
7725
7820 BX1
7821 BX2
7822 BX3
7823 BX4
7911
7912
7913
7973 BX31
7976 BX34
7996 H33
4
H 33
Outdoor
Unit Fault
(370)
OFF
ON (1)
ON (2)
ON (2)
ON (2)
INPUT OUTPUT
QX Relay test
UX1 Output test
UX1 PWM-Signal
DO2 Cooling mode
D3 Heat pump
UX3 Output test ("Inverter" command)
UX3 Voltage signal (Ux3)
Sensor temp (HP flow temperature)
Sensor temp (HP return temperature)
Sensor temp (DHW temperature)
Sensor temp (Outside temperature)
EX1 Input (Power shedding, EJP)
EX2 Input (Tariffs day/night)
EX3 Input (External fault)
Sensor temp (Mixing circuit temp.)
Sensor temp (Swimming pool exchanger temperature)
Contact state
EX 1
Load-shedding (EJP)
0 V 230 V 230 V
"
"released"
locked
ON ON OFF
ON OFF OFF
ON OFF OFF
ON OFF OFF
ON ON ON
EX 2
Off-peak/peak
hours
0 V 230 V
"
ON ON
ON OFF
ON ON
ON ON
ON ON
WATERSTAGE
Maintenance Document 1589-3
EX 3
External fault
(369)
0 V 230 V
ON OFF
ON OFF
ON OFF
ON OFF
ON OFF