6 Chapter 3 Maintenance And Troubleshooting
Liebert.CRV+ Condenser User Manual
Chapter 3 Maintenance And Troubleshooting
This chapter introduces the maintenance and troubleshooting of the condenser. Users should check the condenser
regularly and solve the problems in time.
Note
1. The maintenance of the condenser must be done by technicians.
2. Except for the commissioning items that must be carried out with power on, during maintenance, the power of the indoor unit
must be cut off.
3.1 Maintenance
Refrigeration system
1. Check that the refrigeration pipes are firmly fixed. The refrigeration pipes shall not shake with the vibration of wall,
earth or equipment frame. Otherwise reinforce the refrigeration pipes with fastening objects.
2. Check that there is no oil on the accessories of all refrigeration pipes, and make sure that the pipes do not leak.
Heat exchanger
1. Clean the fin of heat exchanger regularly.
2. Clean the fin of heat exchanger with compressed air or fin detergent (weakly alkaline) if the condenser air flow is
blocked. The direction of inverse air flow is good when the compressed air is used.
3. Check for damaged or reversed fins and maintain them in time.
4. Avoid snow accumulation around the condenser in winter.
Fan
Check that the fan runs normally and check it for problems such as abnormal noise, vibration and bearing failure.
3.2 Troubleshooting
Perform troubleshooting according to Table 3-1.
Table 3-1 Table of alarm troubleshooting
Fault phenomenon
Possible causes
Handling method
Equipment does not
start up
Equipment does not connect to the
power supply
Check the input voltage
High pressure alarm
Insufficient condenser air flow
Clean away the ailen objects on the coil surface or near the
air inlet, and check the fan speed regulation function of the
control board
Condenser fan does not run
Check if the cable connection between the control board
and outdoor unit terminals is loosened, check if the outdoor
uinit cable connection is loosened, and check if the
condenser pressure sensor is normal
