Protection Codes; Troubleshooting Flow Charts - Zanussi ZS12V70CCHI Service Manual

8.3 Protection Codes

CODE
Compressor speed limited due to outdoor temperature
Compressor speed limited due to outdoor pipe (condenser) temperature
Compressor speed limited due to compressor pressing temperature
Compressor speed limited due to board cooler temperature
Compressor speed limited due to indoor unit exchanger temperature
Defrost occurred
Compressor speed limited due to current
Supply frequency error
Indoor unit environment sensor is on or short circuited
Outdoor unit pipe sensor is on or short circuited
PFC circuit protection
Wi-fi module communication error
PFC high voltage switch-off protection
Sudden voltage drop/compressor protection
DC supply voltage error
Excessive power error

8.4 Troubleshooting Flow Charts

Error Code
Indoor unit environment sensor error
Display shows SR 01 error when
the air conditioner is switched on
via the remote control. (Indoor unit
environment sensor error)
NOTE 1: Sensor errors given above contain precision. NTS resistances within the sensors are either short-circuited or open-circuited.
Sensor groups should be replaced when these errors are seen.
NOTE 2: The former name of this error is ER 01. The error description was changed to SR 01 on all products that started to be used
as of 2015. This error does not cause the product to stop; the product continues the cooling or heating process according to 24°C
without regard to the environment sensor. However, it sends a malfunction signal to the customer by giving a signal on the indoor unit
display.
Error Code
Compressor cable disconnected
Gives ER 02 error (outdoor unit
compressor cable is disconnected)
Check the U end of cables going from
the compressor to the main board.
Are there errors in connections? Are
there any disconnections, ruptures,
looseness etc. in the sockets?
Measure the compressor coils. Is there
an open circuit in the coils?
(7 Segment)
SR 01
(7 Segment)
ER 02
NO
Indoor Unit
Display
No display
No display
No display
No display
No display
DF
No display
No display
SR 01
SR 08
No display
ER 19
No display
No display
No display
No display
Outdoor unit led
No display
Replace the indoor unit sensor group
Outdoor unit led
Blinking 25 times - stopping for 3 sec.
Outdoor unit LED signals 25 times
YES
Correct or replace the cables.
YES
Replace the compressor.
29
Outdoor Unit LED
Blinking 1 time - stopping for 3 sec.
Blinking 2 times - stopping for 3 sec.
Blinking 3 times - stopping for 3 sec.
Blinking 4 times - stopping for 3 sec.
Blinking 5 times - stopping for 3 sec.
Blinking 6 times - stopping for 3 sec.
Blinking 10 times - stopping for 3 sec.
Blinking 23 times - stopping for 3 sec.
No display
Blinking 14 times - stopping for 3 sec.
Blinking 12 times - stopping for 3 sec.
No display
Blinking 28 times - stopping for 3 sec.
Blinking 29 times - stopping for 3 sec.
Blinking 30 times - stopping for 3 sec
Blinking 31 times - stopping for 3 sec.