Firmware V3.15
21.04.2021
33/401
Defrosting in two-zone operation
In two-zone operation, sensors Rx.1 act on Relay 1 and Rx.2 on Relay 2.
R1.x: Defrost sensor (with UA 121, UA 131, UR 141 NK/TK, UA 131 DD these sensors are used for defrosting)
R2.x: Supply air sensor (UA 111, UA 111 D, UA 141 these sensors are used for defrosting)
Solenoid valve 1: Relay for Solenoid Valve Zone 1
Solenoid valve 2: Relay for Solenoid Valve Zone 2
Defrost heater 1 to 4: Relay for Defrost Heater 1 to 4 (depending on controller type)
Summary of Contents for UA 400
Page 26: ...Firmware V3 15 21 04 2021 26 401 Solenoid valve Relay for Solenoid Valve 1 ...
Page 172: ...Firmware V3 15 21 04 2021 172 401 Service Mode 6 7 2 SERVICE MOD ...
Page 244: ...Firmware V3 15 21 04 2021 244 401 ...
Page 361: ...Firmware V3 15 21 04 2021 361 401 FANS 2 Pos XXXXX Fan Delay Fan delay ...
Page 372: ...Firmware V3 15 21 04 2021 372 401 ...