- 15 -
2)
、
Open controller cover, then connect the power source wires. If the power source is three phases,
check the phase order immediately. Red lamp on controller board will light while phase order is correct.
Check if water pump works smoothly. If there is scream from water pump, it means there is air inside
the water circle. In this case, stop the machine and exhaust air inside water circle. Then start machine
again. The compressor will start to run 3 minutes after the system is switched on. Check if compressor
run at right direction.
3)
、
Check if there is unusual noise from system by listening. If there is, switch off the machine and
check system. If no unusual noise, let system running.
4)
、
If all checking items passed, keep system running.
5)
、
At heating mode , if water tanks temperature
≤
45 , compressor starts to work. The compressor stop
working until the water tanks temperature increase to 50 .
6)
、
Check the temperature difference between return water temperature and outlet water temperature of
outdoor unit. Normally, the temperature difference should be less than 6 . If the temperature difference
is over 6 , check if water flow match designed standard.
7)
、
All hydraulic circle filters must be cleaned after finishing test run.
③
③
③
③
Normal operation
：
：
：
：
Heating
running
process:
Start
the
unit---pump
running---
Detection
of
flow
switch---Compressor running (When disconnected from the low water level, the solenoid valve will
open to compensate water)
Water level control: in cycle mode
，
when disconnected from the low water level, the unit Stop
running
，
the compressor is permitted running the circle when the switch of low water level is pull in,
when the low water level switch is disconnected, then the power begins to compensate Water. At
the same time stop provide water for the pump.. When tank temperature is lower 3 , the tanks begin
to detect the temperature, if the tank temperature is higher than the setting temperature, the
compensate water valve would work for water-filled, If the tank temperature is 3 lower than the
setting temperature, it would stop compensate water and power off, At the high-water absorption time,
it stops water supply. When the high-level is broken up but the mid-water level is running it won’t
