Hitachi PC-ALHP1, Installation And Operation Manual

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Periodic check (only for gas heat pump air conditioner)
For the gas heat pump air conditioning, the periodic check is re -
quired because the engine is equipped.
If the indication lamp flashes in follows, the periodic check shall
be performed.
Contact your distributor or contractor to request the maintenance.
• When the FILTER indicator (yellow) and the TIMER indicator
(green) flash slowly (2 seconds ON/ 2 seconds OFF cycle),
it is notified that the periodic check for outdoor unit is nearby.
• When the FILTER indicator (yellow) and the TIMER indicator
(green) flash quickly (0.5 seconds ON/ 0.5 seconds OFF cy -
cle), it is notified that the periodic check time for outdoor unit
is passed. Contact beforehand your distributor or contractor
to request the maintenance.
9.2 IN ABNORMAL CONDITION
Abnormality
• When some troubles occur such as safety device actuation,
etc. during the test run or the normal operation, “RUN” (red
lamp) flashes (0.5 second ON / 0.5 second OFF).
• The alarm codes are indicated by the flashing times of “DEF”
(green lamp) and “FILTER” (yellow lamp).
“DEF” (green): The number of flashing is shown at the tens digit
of alarm code.
“FILTER” (yellow): The number of flashing is shown at the units
digit of alarm code.
Example
3 5
“FILTER” (yellow lamp)
“DEF” (green lamp)
Alarm
“DEF” flashes 3 times
(0.5 second ON/0.5 second OFF)
“FILTER” flashes 5 times
(0.5 second ON/0.5 second OFF)
These indications are repeated until the alarm is reset.
Power failure
• All the indications are OFF.
• Once the unit is stopped by the power failure, the unit will not
be started again although the power recovers. Perform the
starting procedures again.
• In case of instantaneous power failure within 2 seconds, the
unit will be started again automatically.
Electric noise
There could be a case that all the indications are OFF and the
unit is stopped. This is occurred by the activation of the micro
computer for the unit protection from the electric noise.
Perform the starting procedures again.
Indication of receiver kit
13 PMML0314A rev.0 - 09/2013 - P5415315
ENGLISH