Kaisai KHC-22RY3, Инструкция по установке

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Symptom 3: Pump is making noise (cavitation)
POSSIBLE CAUSES CORRECTIVE ACTION
There is air in the system. Purge air.
Water pressure at pump
inlet is too low.
• Check on the manometer that there is sufficient water pressure.
The water pressure must be > 1 bar (water is cold).
• Check that the manometer is not broken.
• Check that the expansion vessel is not broken.
• Check that the setting of the pre- pressure of the expansion
vessel is correct (refer to "9.3 water piping/Checking the
water volume and expansion vessel pre-pressure").
Symptom 4: The water pressure relief valve opens
POSSIBLE CAUSES CORRECTIVE ACTION
The expansion vessel isbroken. Replace the expansion vessel.
The filling water pressure
in the installation is
higher than 0.3MPa.
Make sure that the filling water pressure in the installation is about
0.15~0.20MPa (refer to "9.3 water piping/Checking the water volume and
expansion vessel pre-pressure").
Symptom 6: Space heating capacity shortage at low outdoor temperatures
Symptom 5: The water pressure relief valve leaks
POSSIBLE CAUSES CORRECTIVE ACTION
Dirt is blocking the water
pressure relief valve
outlet.
Check for correct operation of the pressure relief valve by turning the red
knob on the valve counter clockwise:
• If you do not hear a clacking sound, contact your local dealer.
• In case the water keeps running out of the unit, close both the
water inlet and outlet shut-off valves first and then contact your
local dealer.
POSSIBLE CAUSES CORRECTIVE ACTION
Backup heater operation
is not activated.
Too much heat pump
capacity is used for
heating domestic hot
water (applies only to
installations with a
domestic hot water tank).
Check that the “t_DHWHP_MAX” and “t_DHWHP_RESTRICT” are
configured appropriately:
• Make sure that the “DHW PRIORITY” in the user interface is
disabled.
• Enable the “T4_TBH_ON” in the user interface/FOR SERVICEMAN
to activate the booster heater for domestic water heating.
Check that the "OTHER HEATING SOURCE/ BACKUP HEATER"is
enabled, see "10.7 Field settings" Check whether or not the thermal
protector of the backup heater has been activated (refer to “Controls parts
for backup heater(IBH) ” ). Check if booster heater is running, the backup
heater and booster heater can’t operate simultaneously.
Symptom 7: Heat mode can’t change to DHW mode immediately
POSSIBLE CAUSES CORRECTIVE ACTION
Volume of tank is too
small and the location of
water temperature probe
not high enough
• Set “dT1S5” to 20 °C, and set “t_DHWHP_RESTRICT” to minimum value.
• Set dT1SH to 2 °C.
• Enable TBH, and TBH should be controled by the outdoor unit.
• If AHS(boiler) is available, turn boiler on first, if requirement for
turn heat pump on is fullfilled, the heat pump will turn on.
• If both TBH and AHS are not available, try to change the postion
of T5 probe(refer to 2 General information/Domestic hot water
tank).
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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
When the ambient temperature is
low, the hot water is not enough
and the AHS is not operated or
operated late
DHW mode priority
Manual turn on the FAST WATER
function, after the hot water meets
the requirements, the heat pump
fails to switch to the air-conditioning
mode in time when the air
conditioner is in demand
Disinfect function is
enabled but without TBH
Normal , no need for heating
Manual turn off the FAST WATER function
If there is AHS or IBH connect to the unit, when the outdoor unit failed, the
indoor unit must run DHW mode till the water temperature reach the setting
temperature before change to heating mode.
• Disable disinfect function
• add TBH or AHS for DHW mode
• Set "T4DHWMIN", the suggested value is ≥ -5
℃
• Set "T4_TBH_ON", the suggested value is ≥ 5
℃
• 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 parameters.
At home page, go to ''MENU''>''OPERATION PARAMETER''.
Press ''OK''. There are nine pages for the operating parameter as following. Press ''
▼ ''
、
'' ▲ '' to scroll.
OPERATION PARAMETER #01
OPERATE MODE COOL
ADDRESS
SV1 STATE ON
ONLINE UNITS NUMBER 1
SV2 STATE OFF
SV3 STATE OFF
PUMP-I ON
1/9
OPERATION PARAMETER #01
PUMP-C OFF
ADDRESS
PUMP-S OFF
PUMP-O OFF
PUMP-D OFF
PIPE BACKUP HEATER OFF
TANK BACKUP HEATER ON
2/9
OPERATION PARAMETER #01
T1 LEAVING WATER TEMP. 35°C
ADDRESS
WATER FLOW 1.72m
3
/h
GAS BOILER OFF
HEAT PUMP CAPACTIY 11.52kW
POWER CONSUM. 1000kWh
Ta ROOM TEMP 25°C
3/9
OPERATION PARAMETER #01
Tw2 CIRCUIT2 WATER TEMP. 35°C
ADDRESS
TIS’ C1 CLIMATE CURVE TEMP. 35°C
T5 WATER TANK TEMP. 53°C
TIS2’ C2 CLIMATE CURVE TEMP. 35°C
TW_O PLATE W-OUTLET TEMP. 35°C
TW_I PLATE W-OUTLET TEMP. 30°C
4/9
OPERATION PARAMETER #01
Tbtl BUFFERTANK_LOW TEMP. 35°C
ADDRESS
IDU SOFTWARE 01-09-2019V01
Tbtu BUFFERTANK_UP TEMP. 35°C
5/9
OPERATION PARAMETER #01
COMP.CURRENT 12A
ADDRESS
COMP.FREQENCY 24Hz
ODU MODEL 6kW
COMP.RUN TIME 54 MIN
COMP.TOTAL RUN TIME 1000Hrs
EXPANSION VALVE 200P
6/9
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