Table of Contents
Checking
Meaning, detecting method
code
Transmission processor hardware
6602
abnormality
Though transmission processor
intends to transmit "0", "1" is dis-
played on transmission line.
Note:
The address/attribute shown on
remote controller indicates the
controller which has detected
error.
Transmission circuit bus-busy
6603
abnormality
1. Collision of data transmission:
Transmission can not be per-
formed for 4~10 consecutive
minutes due to collision of data
transmission.
2. Data can not be transmitted on
transmission line due to noise for
4~10 consecutive minutes.
Note:
The address/attribute shown on
remote controller indicates the
controller which has detected error.
Cause
(1) At the collision of mutual transmission data generated during the wiring
work or polarity change of the transmission line of indoor or outdoor
unit while turning the power source on, the wave shape is changed and
the error is detected.
(2) Ground fault of transmission line.
(3) Insertion of power supply connector (CN40) of plural outdoor units at
the grouping of plural refrigerant systems.
(4) Insertion of power supply connector (CN40) of plural outdoor units in
the connection system with MELANS.
(5) When using the power supply unit for transmission line in the connected
system with MELANS, the power supply connector (CN40) of the
outdoor unit is inserted into the transmission line.
(6) Faulty controller of unit in trouble.
(7) Change of transmission data due to the noise in transmission.
(8) Connection system with plural refrigerant systems or MELANS for
which voltage is not applied on the transmission line for central control.
Checking method and processing
Transmission line
YES
installed while turning
power source on?
NO
Check power source of indoor unit.
NO
220V ~ 240V ?
YES
Check transmission line
work and shield
Ground fault or
YES
shield contacted with
transmission line?
NO
System composition?
Single refrigerant
Plural refrigerant
system
system
Confirm supply power con-
nector CN40 of outdoor unit
YES
Only 1 set with
CN40 inserted?
Modification of CN40
insertion method.
✻ For the investigation method, follow
Investigation of trans-
mission line noise
tion method of transmission wave shape/noise>
YES
Noise exist?
NO
Faulty controller of
generating unit
(1) As the voltage of short
frequency like noise is mixed
in transmission line
continuously, transmission
processor can not transmit.
(2) Faulty controller of
generating unit.
- 138 -
Checking method & Countermeasure
Shut off the power source of outdoor/
indoor units and make it again
Erroneous power
source work
Erroneous transmis-
sion work
System with the power supply
unit for transmission line
Confirm supply power con-
nector CN40 of outdoor unit
NO
CN40 inserted?
NO
Replace insertion of
CN40 to CN41
Investigation of the
cause of noise
Modification of
faulty point
(a) Check transmission wave
shape/noise on trans-mission line
by following
of transmission wave shape/noise>.
→ No noise indicates faulty
controller of generat-ing unit.
→ Noise if existed, check the noise.
YES
Hide quick links:
Table of Contents
Troubleshooting
Related Manuals for Mitsubishi Electric PURY-P200
Related Products for Mitsubishi Electric PURY-P200
- Mitsubishi Electric PURY-P216TSJMU-A
- Mitsubishi Electric PURY-P216TYSJMU-A
- Mitsubishi Electric PURY-P240TSJMU-A
- Mitsubishi Electric PURY-P264TSJMU-A
- Mitsubishi Electric PURY-P264TYSJMU-A
- Mitsubishi Electric CITY MULTI PURY-P288YSJMU-A
- Mitsubishi Electric CITY MULTI PURY-P264TSJMU-A-BS
- Mitsubishi Electric CITY MULTI PURY-P288TSJMU-A-BS