Kaisai KHP-2.4/D270 Installation And Service Manual - page 85
85
AIR SOURCE HEAT PUMP WATER HEATER
EN
11. MALFUNCTION ANALYSIS
Warning:
Please do not maintain the air source water heater by yourselves; otherwise, it may cause electric
shock or fire hazard. Please contact with appointed maintenance center for maintenance. Before
asking for the maintenance, please check below items for saving your time and cost.
Table 11-1
“Malfunction”phenomenon
“Malfunction”analysis
The unit can’t operate if turn on the unit
immediately after stopping operation
In order to protect the unit, if turn on the unit
immediately after stopping operation, the
microcomputer will make the unit delay 5
min to operate.
There’s water-flowing sound during
operation process.
During the operation process, there will be
the flowing sound of refrigerant. It’s not the
malfunction.
The condensate water is drained out
from the water heater.
This is the normal phenomenon for the unit,
not the malfunction. Please feel free to opera
-
te it. Please connect the drainage pipe to the
proper drainage outlet by referring to Instal
-
lation sketch map.
There’s water drainage from the TP
valve.
During heating process, when the inner port
of water tank operates at ultrahigh
pressure, there will be a little water
drainage from the TP valve for releasing
pressure, which is the normal phenomenon.
If there’s too much water drainage and
there’s vibration, please contact the
appointed maintenance center.
Table 11-2
“Malfunction”phenomenon
“Malfunction”analysis
Wired controller displays freeze prevention
When the unit operate in winter, the freeze
prevention protection will be activated,
which is the normal phenomenon.
Hot water flowing from sprayer head is too
short
The water flowing volume for the sprayer
head is too big, which is the normal phenome
-
non. Replace it with the sprayer head with the
rated flow volume of 6~7L/min.