Example Of Error Occurrences; Error Occurrence Order - LG PRCKD21E Installation Manual

SELF DIAGNOSIS FUNCTION
50
Display
Error category
number
CH 15
00 CO sensor defect
2
05
Pressure sensor de-
CH 16
fect
06
01
Air Flow sensor de-
CH 17
fect
02
CAUTION
!
1. How to release smoke removal Error(CH 8) occurrence ① Dip switch No. 23 ON → ②
PCB Reset → ③ FND(7segment) mark verification (display sequentially No. 1~9 → (
④ Dip switch No. 23 OFF → ⑤PCB Reset → ⑥Release completed

Example of error occurrences

Pipe entrance temperature sensor defect
(communication PCB rotary switch number: No. 01)
Communication defect between communication PCB and outdoor unit
(communication PCB rotary switch number: No. 05)
SA duct temperature value error occurred
RA duct humidity value error occurred

Error occurrence order

For outdoor unit error code and inspection, refer to MULTI V technical material.
Error occurred
location
-
Pressure difference
Static pressure
RA
SA
Situation
h Error occurrences are indicated on 7 segment in
the order of ① → ② → ③.
Cause of Error occurrence
If it is within the error boundary due
to the CO sensor disconnection/
2
short circuit/single unit defect.
If the sensor value due to the pres-
sure sensor (pressure difference,
rated pressure) disconnection/short
circuit/single unit defect is within the
error boundary.
If the sensor value due to the Air
Flow sensor(SA,RA)
disconnection/short circuit/single unit
defect is within the error boundary.
Error occurred
CH → 2 → 01
CH → 5 → 05
CH → 13 → 02
CH → 14 → 01
) →