- 36 -
Water tank
temperature
sensor is
damaged
EX
:
17
Sensor short circuit or open
circuit
Stop X #
Units
Heat water
system
Maintenance and
replacement
sensors
Communication
Failure
EX
:
00
X Module Communication
Failure
Stop X #
Units
Maintenance
Phase Protection
EX
:
01
〖
B9
〗
to "1", lack of
reverse-phase
Stop X #
Units
Maintenance
Refrigeration
antifreeze switch
off
EX
:
03
Refrigeration
Stop X #
Units
Maintenance
Switch off heat
water flow
EX
:
06
Continuous heat water flow
switch off
〖
Cd
〗
seconds
Stop X #
Units heat
water
system
Maintenance
Y # interlock
switch
disconnects
EX
:
2Y
Interlock switch off
Stop X #
Units Y#
COMP
Maintenance
Y # High Voltage
Fault
EX
:
3Y
High Pressure Switch off
Stop X #
Units Y#
COMP
(3 times / hour)
after repair
Y # low Voltage
Fault
EX
:
4Y
Low Pressure Switch off
Stop X #
Units Y#
COMP
(3 times / hour)
after repair
Protection of
ground-source
Refrigeration
outlet water is
too high
EX
:
51
Refrigeration
ground-source water
temperature is higher than
〖
C1
〗
Stop Units
Maintenance
Protection of
A/C
Refrigeration
outlet water is
too low
EX
:
52
Refrigeration A/C water
temperature is lower than
〖
C2
〗
Stop Units
Maintenance
Protection of
heating ,A/C
outlet water is
too high
EX
:
53
Heating A/C water
temperature is higher than
〖
C3
〗
Stop Units
Maintenance
Protection of
heating ,
ground-source
outlet water is
too high
EX
:
54
Heating ground-source
outlet water temperature is
lower than
〖
C4
〗
Stop Units
Maintenance