Electrical Control Function
54
Electrical Control System
1. Electrical Control Function
1.1 Definition
T1: Indoor room temperature
T2: Coil temperature
of evaporator
T
s
:
Setting Temperature
T3: Coil temperature of condenser
T4: Outdoor ambient temperature
T5: Compressor discharge temperature
1.2 Main Protection
1.2.1 Time delay at restart for compressor. 1.2.2
Sensor protection at open circuit and
breaking disconnection.
1.2.3 Phase check function(for 3-phase models)
If the phase sequence is detected wrong or lack of
1 or 2 phase, the unit won’t start and there is error
code displayed on outdoor PCB.
1.2.4 Temperature protection of compressor
discharge
When the compressor discharge temp. is getting
higher, the running frequency will be limited as
below rules:
18~24K:
36~60K:
T5
Compressor off
Frequency limit
Normal
Frequency holding
1.2.5 Low pressure check function(for 36-60K
models)
The low pressure switch should be always closed. If
it is open, the system will stop until the fault is
cleared. Within 5 minutes after the compressor
starts and 4 minutes after defrosting ends, low
pressure
switch won’t be checked.
Note: If this protection occurs 3 times within 20
minutes
, it won’t recover automatically until the
main power is cut off.
Содержание BSBSI36CTM
Страница 5: ...External Appearance General Information 3 2 External Appearance 2 1 Indoor Units Duct ...
Страница 14: ...Service Space 12 Duct Type 3 Service Space Ensure enough space required for installation and maintenance ...
Страница 15: ...Wiring Diagrams 13 4 Wiring Diagrams BSBSIE36CTM BSBSIE48CTM BSBSIE60CTM ...
Страница 22: ...Field Wiring 20 Duct Type 10 Field Wiring ...
Страница 25: ...Dimensions 23 Outdoor Units Model Unit mm W D H W1 A B BSBSIC60CTM 952 415 1333 1045 634 404 ...
Страница 28: ...Wiring Diagrams 28 Outdoor Units 4 Wiring Diagrams BSBSIC36CTM BSBSI48CTM BSBSIC60CTM ...
Страница 42: ...Installation Installation 43 ...
Страница 82: ...Troubleshooting Electrical Control System 85 ...