Mitsubishi Electric PUHZ-SHW80VHA Service Manual page 25

1 0 - 2 - 3. T est run for wired remote c ontroller < P A R - 2 1 M A A >
"TEST RUN" and the currently selected
operation mode are displayed alternately.
Displays the remaining
test run time.
B
C
A
Pipe (liq uid) temperature
S y mp toms in test run mode
R emote C ontroller D isp lay
Remote controller displays "PLEASE
WAIT", and cannot be operated.
After power is turned on, "PLEASE WAIT"
is displayed for 3 minutes, then check
code is displayed.
No display appears even when remote
controller operation switch is turned on.
(Operation lamp does not light up.)
Display appears but soon disappears
even when remote controller is operated.
C ontents of inferior p h enomena
L C D
Abnormality of room temperature thermistor
P1
Abnormality of pipe temperature thermistor/ Liq uid
P2
Abnormality of drain sensor/ Float switch connector open
P4
P5 Drain overflow protection is operating.
P6 Freezing/ overheating protection is operating.
P8 Abnormality of pipe temperature
P9 Abnormality of pipe temperature thermistor/ Cond./ Eva
Fb
Abnormality of indoor controller board
LED1 (microprocessor power supply)
LED2 (remote controller)
LED3 (indoor/ outdoor communication)
OCH526C
O perati ng procedures
1. T urn on the main power supply.
2. Press
3. Press
button.
4. Press
5. Check the outdoor unit f an f or
correct running.
[TEST] button
6. Press the ON/ OFF button to reset the test run in progress.
7. R egister the contact number.
O U T D O O R B O A R D L E D D isp lay
After "startup" is displayed, only
After "startup" is displayed,
green(once) and red(once) blink
After "startup" is displayed,
green(once) and red(twice) blink
After "startup" is displayed,
green(twice) and red(once) blink
After "startup" is displayed, only
After "startup" is displayed, only
Lights when power is supplied.
Lights when power is supplied for wired remote controller.
The indoor unit should be connected to the outdoor unit with address "0" setting.
Flashes when indoor and outdoor unit are communicating.
W hile the room temperature display on the remote
controller is " PLEASE W AI T " , the remote controller is disabled.
W ait until " PLEASE W AI T " disappears bef ore using remote controller.
" PLEASE W AI T " appears f or about 2 minutes af ter power
supply is turned on. *
A T EST button twice. T he T EST R UN appears on the screen.
Cooling mode: Check if cool air blows and water is drained.
B
OPER AT I ON SW I T CH
H eating mode: Check if warm air blows. (I t takes a little
C
AI R DI R ECT I ON button. Check f or correct motion of auto-vanes.
T he outdoor unit f eatures automatic capacity control to
provide optimum f an speeds. T heref ore, the f an keeps
running at a low speed to meet the current outside air
condition unless it ex ceeds its available max imum power.
T hen, in actuality, the f an may stop or run in the reverse
direction depending on the outside air, but this does not
mean malf unction.
— —
minutes during system startup. (Normal)
L C D
Malfunction outdoor unit
U1– UP
Malfunction outdoor unit
F3– F9
E0– E5 Remote controller transmitting error
Indoor/ outdoor unit communication error
E6– EF
---- No error history
FFFF No applied unit
PA Forced compressor stop(due to water leakage abnormality)
Abnormality of refrigerant
PL
while until warm air blows. )
C ause
C ontents of inferior p h enomena
, L , L and
1 3