Johnson Controls HVWHP072B32S - Page 49

SM-18006
3-29
TROUBLESHOOTING
Cause of
Stoppage
(Alarm Code
or Stoppage
Code)
Contents
Details of Alarm Code History
Time
T
Alarm
Alarm Code
Abnormal
Data
W.S.
Unit No.
Comp. No.
Inverter PCB No.
44
Abnormality of low-pressure increase
Accumulated
Time
AC.
○
--
d1-12
Accumulated
Time
d1.
○
--
45
Abnormality of high-pressure increase
Accumulated
Time
AC.
○
--
d1-13
Accumulated
Time
d1.
○
--
47
Activation of low-pressure decrease protection device
(Vacuum operation protection)
Accumulated
Time
AC.
○
--
d1-15
Accumulated
Time
d1.
○
--
48
Activation of inverter overcurrent protection device
Accumulated
Time
AC.
○ ○
iTC
d1-17
Accumulated
Time
d1.
○ ○
iTC
51
Abnormality of inverter current sensor
Accumulated
Time
AC.
○ ○
iTC
d1-17
Accumulated
Time
d1.
○ ○
iTC
53
Inverter error signal detection
Accumulated
Time
AC.
○ ○
iTC
d1-17
Accumulated
Time
d1.
○ ○
iTC
54
Abnormality of inverter temperature
Accumulated
Time
AC.
○ ○
iTC
d1-17
Accumulated
Time
d1.
○ ○
iTC
55
Inverter failure
Accumulated
Time
AC.
○ ○
iTC
d1-17
Accumulated
Time
d1.
○ ○
iTC
A1 Detection of External Abnormality
Accumulated
Time
AC.
○
--
b5 Incorrect setting of indoor unit connection number
Accumulated
Time
AC. --
EE Compressor protection alarm
Accumulated
Time
AC. --
d1-05 Instantaneous power failure
Accumulated
Time
d1 --
d1-18 Abnormality of inverter and other
Accumulated
Time
d1 iTC
d1-26 Abnormality of high pressure decrease
Accumulated
Time
d1 --
d1-32 Retry stoppage by indoor unit auto address setting
Accumulated
Time
d1 --
Control
Information
Micro-computer reset by abnormality of inverter
transmission
Accumulated
Time
Ci. 1
Micro-computer reset by abnormality of indoor unit
transmission
Accumulated
Time
Ci. 3
Micro-computer reset by abnormality transmitting
between water source unit and water source unit
Accumulated
Time
Ci. 4
Micro-computer reset for abnormality of control state
Accumulated
Time
Ci. 6
T
(Details of Alarm)
AC.: Alarm
d1.: Retry
Ci.: Control Information
iTC: Inverter Stoppage Code
* Thermo-ON: The water source unit and some indoor units are running.
Thermo-OFF: The water source unit and some indoor units stay on, but don’t run.