69
Test Operation, Troubleshooting and Maintenance
(2)
Low pressure protection
Low pressure protectio
n
Does the water pump
not started or the flow is
inadequate?
Yes
Check the water pump.
Does the electric
expansion valve work
normally?
Is the pressure switch
damaged or is the wiring
loosened?
Is scale formed inside
the shell and tube?
Are water pipes designed
improperly? The flow beco
mes
smaller when the terminal unit
is turned off.
Does refrigerant leak?
Does the controller
alarm incorrectly?
Replace the coils of the
electric expansion valve
or even the main body
.
Replace the pressure switch
or rewire it
.
Clean the exchanger.
Adjust the water pipes
.
Do the leak test. Then add
refrigerant.
If this occurs frequently, the
main board should be
replaced.
Contact the supplier.
No
Yes
No
No
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Содержание LSQWRF35VM/NaA-M
Страница 1: ...Service Manual Change for life A series modular air cooled chiller heat pump T1 R410A 50Hz T1 R32 50Hz...
Страница 5: ...1 Product Product...
Страница 18: ...14 Unit Control Unit Control...
Страница 29: ...25 Unit Installation Unit Installation...
Страница 58: ...54 Unit Installation 3 5 7 Electric wiring digram 1 LSQWRF35VM NaA M...
Страница 59: ...55 Unit Installation 2 LSQWRF60VM NaA M LSQWRF65VM NaA M...
Страница 60: ...56 Unit Installation 3 LSQWRF35VM NhA M...
Страница 61: ...57 Unit Installation 4 LSQWRF60VM NhA M...
Страница 62: ...58 Unit Installation 5 LSQWRF130VM NhA M...
Страница 63: ...59 Unit Installation...
Страница 64: ...60 Unit Installation The electric wiring diagrams on the unit always prevail...
Страница 66: ...62 Test Operation Troubleshooting and Maintenance Test Operation Troubleshooting and Maintenance...