Remote Controller Diagnosis - Mitsubishi Electric PEH-P8YE Technical & Service Manual

[4] Remote controller diagnosis

If operation cannot be carried out from the remote controller, use this function to diagnose the remote controller.
1
ON OFF
CLOCK
CLOCK
˚C
STAND BY INDOOR UNIT
DEFROST
ADDRESS NO
2
ON OFF
CHECK
CLOCK
˚C
STAND BY INDOOR UNIT
DEFROST
ADDRESS NO
ON OFF
CHECK
CLOCK
˚C
STAND BY INDOOR UNIT
DEFROST
ADDRESS NO
3 (1)
ON OFF
CHECK
CLOCK
˚C
STAND BY INDOOR UNIT
DEFROST ADDRESS NO
(2)
ON OFF
CHECK
CLOCK
˚C
STAND BY INDOOR UNIT
DEFROST ADDRESS NO
(1)
ON OFF
CHECK
CLOCK
˚C
STAND BY INDOOR UNIT
DEFROST
ADDRESS NO
(2)
ON OFF
CHECK
CLOCK
˚C
STAND BY INDOOR UNIT
DEFROST
ADDRESS NO
L Remote controller transmission data
M Transmission data at transmission path
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1Hr.
˚C
FILTER
CHECK MODE
FUNCTION
1 First, check the electricity current marker
If the correct voltage (DC 12 V) is not displayed on the remote
controller, the electric current marker will be lit.
If the electricity current marker is not lit, check the remote control-
ler wiring and the indoor units.
I Electric current marker
2 Transfer to remote control mode
Hold down the CHECK button for five seconds or more to display
the diagram on the left.
Press the FILTER button to commence diagnosis of remote con-
troller.
3 Remote controller diagnosis results
(1) The remote control is functioning correctly.
Check other possible causes as there are no problems with the
remote controller.
(2) The remote controller has a nonconformity.
The remote controller must be replaced.
Error display 1 ("NG") flashes to show a nonconformity in the trans-
mitter-receiver circuit.
Potential problems other than those diagnosed for the
remote controller.
(1) Single transmission not possible if error display 2 ("E3") flashes.
There is "noise" on the transmission line, or damage of other re-
mote controllers for the indoor units can be considered. Check the
transmission path and other controllers.
(2) Data error has occurred when error display three shows "ERC"
and number of data errors.
Number of generated data errors (maximum 66 errors).
The number of generated data errors stands for the difference in
the number of bits of transmitted data from the remote controller
and the actual number of bits that were transmitted along the trans-
mission path. If this error occurs, "noise", etc., is interfering with
the transmission data. Check the transmission path.
K When the number of data errors generated is 02
4 Cancel the remote controller diagnosis
Hold down the CHECK button for five seconds or more to cancel
the remote controller diagnosis. The "H0" operation lamp will flash,
and the display screen will return to the status before remote con-
troller diagnosis in approximately 30 seconds.
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