Fujitsu Waterstage WS G140DC6 Series - Control and Test; Control of Electric Backups; Sensor and Input Test Mode

Split system (Single phase and 3-phase type)
Maintenance Document 1544-1 5
1 Control and test
1.1 Control of Electric Backups
H 33
EX 1 EX 2 EX 3
Outdoor
Unit Fault
Load-shedding (EJP) Off-peak/peak
hours
External fault
(369)
(370)
0 V 230 V 230 V 0 V 230 V 0 V 230 V
EJP lock signal (l 2920) "released"
"locked"
HEAT PUMP
OFF
ON ON OFF ON ON ON OFF
DHW auxiliary
ON (1)
ON OFF OFF ON OFF ON OFF
1st stage elec. auxiliary
ON (2)
ON OFF OFF ON ON ON OFF
2nd stage elec. auxiliary
ON (2)
ON OFF OFF ON ON ON OFF
Boiler backup
ON (2)
ON ON ON ON ON ON OFF
(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 INPUT OUTPUT WATERSTAGE
7700 QX Relay test
7710 UX1 Output test
7712 UX1 PWM-Signal
7722 DO2 Cooling mode
7723 D3 Heat pump
7724 UX3 Output test ("Inverter" command)
7725 UX3 Voltage signal (Ux3)
7820 BX1 Sensor temp (HP flow temperature)
7821 BX2 Sensor temp (HP return temperature)
7822 BX3 Sensor temp (DHW temperature)
7823 BX4 Sensor temp (Outside temperature)
7911 EX1 Input (Power shedding, EJP)
7912 EX2 Input (Tariffs day/night)
7913 EX3 Input (External fault)
7973 BX31 Sensor temp (Mixing circuit temp.)
7976 BX34 Sensor temp (Swimming pool exchanger temperature)
7996 H33 Contact state