70
Symptom 8: DHW mode can’t change to Heat mode immediately
POSSIBLE CAUSES
CORRECTIVE ACTION
Heat exchanger for space
heating not big enough
Space heating load is small
Disinfect function is
enabled but without TBH
Normal , no need for heating
• Disable disinfect function
• add TBH or AHS for DHW mode
• Set “t_DHWHP_MAX” to minimum value, the suggested value is
60min.
• If circulating pump out of unit is not controlled by unit, try to
connect it to the unit.
• Add 3-way valve at the inlet of fan coil to ensure enough water
flow.
Symptom 9: DHW mode heat pump stop work but setpoint not reached, space heating require heat but unit stay in DHW mode
POSSIBLE CAUSES
CORRECTIVE ACTION
Surface of coil in the tank
not large enough
The same solution for Symptom 7
TBH or AHS not available
Heat pump will stay in DHW mode untill “t_DHWHP_MAX” reached or
setpoint is reached. Add TBH or AHS for DHW mode,TBH and AHS should
be controlled by the unit.
13.3 Operation parameter
This menu is for installer or service engineer reviewing the operation parameter.
At home page, go to ''MENU''>''OPERATION PARAMETER''.
Press ''OK''. There are five pages for the operating parameter as following. Use ''▼ ''
、
''▲'' to scroll.
1/5
CHILD LOCK
SCROLL
OPERATE MODE COOL
COMPRESSOR CURRENT 12A
COMPRESSOR FREQUNCY 24Hz
COMP.RUN TIME1 54MIN
COMP.RUN TIME2 65MIN
COMP.RUN TIME3 10MIN
2/5
OPERATION PARAMETER
SCROLL
COMP.RUN TIME4 1000HOUR
EXPANSION VALUE 240P
FAN SPEED 600 R/MIN
BACKUP HEATER1 CURRENT 0 A
BACKUP HEATER2 CURRENT 0 A
T1 LEAVING WATER TEMP.1 25°C
3/5
OPERATION PARAMETER
SCROLL
T1B LEAVING WATER TEMP.2 25°C
T2 PLATE F-OUT TEMP. 30°C
T2B PLATE F-IN TEMP. 45°C
T3 OUTDOOR EXCHANGE TEMP. -7°C
T4 OUTDOOR AIR TEMP. -7°C
T5 WATER TANK TEMP. -7°C
The power consumption parameter is preparatory. some parameter is not be activated in the system, the parameter will
show "--"
INFORMATION
i
4/5
OPERATION PARAMETER
SCROLL
Ta Room temp.
Th COMP. SUCTION TEMP.
Tp COMP. DISCHARGE TEMP.
Tw-0 PLATE W-OUTLET TEMP.
Tw-I PLATE W-INLET TEMP.
P1 COMP. PRESSURE1
25°C
25°C
25°C
25°C
25°C
200kPa
5/5
OPERATION PARAMETER
SCROLL
TP2 COMP. PRESSURE2
POWER CONSUMPTION
--kPa
OKWH
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