ENGINEERING
TOMORROW
Service Guide
CDS303/803
Quick troubleshooting guide
To be used prior return
Intent of the document
Considering the important proportion of the drives returned that are concluded as No Fault Found i.e. Fully Functional, the intent of this document is to propose a simplified troubleshooting based on the alarms that can be read through the LCP display of the drives.
Step 1: Connect the LCP display on the drive (1).
Step 2: Power OFF / power ON the drive, let the unit try to start compressor.
Step 3: Check the alarms that are displayed on the drive and alarm history throught Alarm log.
Carefully write them (or take a picture) for further communication with Danfoss.
CDS303 Alarm Log
- Alarm log button
CDS803 Alarm log (Parameter 15-30 Alarm Log: Error Code)
Go to Parameter 15-30 Alarm Log: Error Code
- 2x Menu
- 10x Arrow down
- Ok
- Arrow down
- 2x Ok
- Arrow up
- Up to 10 fault logs can be viewed.
- [0] is the most recent logged data, and [9] the oldest.
A: Check alarm #
B: Over current
C: Start failure
D: Speed limit
E: Compressor failure
F: Replace compressor only and return it for inspection if under warranty
A: Check alarm #
B: Motor phase U missing
C: Motor phase V missing
D: Motor phase W missing
E: Most probably neither a drive or compressor failure
F: Check the motor cable and reset the alarm
A: Check alarm #
B: Earth (ground) fault
C: Power OFF the unit
D: Disconnect power cable at compressor electrical box
E: Perform an insulation resistance test on the compressor with ‘megger’ tester. 500V
F: # resistance < 500 KΩ
G: # resistance > 500 KΩ
H: Replace compressor and return it for inspection if under warranty
I: Replace drive and return it for inspection if under warranty
A: Check alarm #
B: Safe stop activated by HP (High Pressure) switch trip
C: Mains failure
D: Internal fault
E: Others
F: Reset high pressure switch and Reset the drive.
G: Power shortage while compressor was running.
H: Check the code number associated (refer to the Operating Instructions)
I: Return the drive for inspection
J: Probably not a drive nor compressor problem
K: Power OFF / power ON the drive
L: Alarm remaining
M: Check unit main power supply (for example other unit connected on same power supply creating voltage drop at start)
N: Probable that the drive must be returned for inspection if under warranty
Notes:
- If the drive is not equipped with display, the ordering code numbers are 120Z0581 for CDS803 and 120Z0326 for CDS303. LCP kits for remote mounting 120Z0617 for CDS803 and 175Z0929 for CDS303 are also available if needed.
- For further details regarding each alarm, refer to the Operating Instructions.
Danfoss A/S
Climate Solutions • danfoss.com • +45 7488 2222
Any information, including, but not limited to information on selection of product, its application or use, product design, weight, dimensions, capacity or any other technical data in product manuals, catalogues descriptions, advertisements, etc. and whether made available in writing, orally, electronically, online or via download, shall be considered informative, and is only binding if and to the extent, explicit reference is made in a quotation or order confirmation. Danfoss cannot accept any responsibility for possible errors in catalogues, brochures, videos and other material. Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered provided that such alterations can be made without changes to form, fit or function of the product.
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AX404427814471en-000101 © Danfoss | Climate Solutions | 2022.03
Documents / Resources
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Danfoss CDS303 803 Dc Drive [pdf] User Guide CDS303 803 Dc Drive, CDS303, 803 Dc Drive, Drive |
