Huawei NetCol8000-A Maintenance And Troubleshooting Manual page 14

Indoor Unit - Electrical Heater Mo
nthly Maintenance
Inspection
No.
Method
On the main screen, choose Maint > Diagnostic Mode
> Enter. Start the electric heater. Measure the three
Operation
1
phases of the electric heater circuit breaker by using a
inspection
clamp meter. Confrm that three-phase currents are
present, and current deviation does not exceed 20%.
Visual Check that no foreign matter exists on the electric
2
inspection heater surface.
Visual Check for corrosion on the heater surface. You can
3
inspection remove the rust using a metal brush.
Manually check whether the manual reset temperature
Operation
4 switch for dry heating protection (as shown in Figure 6-1
inspection
or Figure 6-2) of the electric heater are operational.
Copyright © 2017 Huawei Technologies Co., Ltd. All rights reserved.
Operations Troubleshooting
Replace the electric
heater
Clean the foreign
matters.
Replace the heater
Contact Huawei
technical
support.
Page 15