Service manual

Troubleshooting by Indication on the Remote Controller SiUS28-902_a
101 Troubleshooting
3.14 “E1” Outdoor Unit: P.C.B. Defect
Remote
Controller
Display
E1
Applicable
Models
RZQ18~30PVJU
Method of
Malfunction
Detection
Check data from E²PROM
Malfunction
Decision
Conditions
When data could not be correctly received from the E²PROM
E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power
supply is turned off.
Supposed
Causes
 Defect of outdoor unit P.C.B. (A1P)
Troubleshooting
Turn off the power once and
turn on again.
Return to normal?
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
the connector, or parts could be damaged.
External factor other than
malfunction (for example,
noise etc.).
Replace the outdoor unit
main P.C.B. (A1P).
NO