Note: When the temperature difference is set at 0, the electric power is entered
into the heating state.
Ewelly
220V/AC
Heating
Pump
High temp
.
Sensor
Low temp
.
Sensor
EW-MH106
Low
water level
detection
Water valve
Note: the output has a high voltage of 220V
Output load: 5A 220V/AC
●
Heating: When the instrument satisfies the following conditions:
①
H
igh temperature zone temperature
≤
"low temperature zone set temperature" +
"heating temperature difference"
;
②
Low temperature zone temperature
≤
"low temperature zone set temperature" - "temperature difference",the "heating" relay is
absorbed and the "heating indicator" is ON.
●
Stop heating: When the low temperature zone temperature
≥
"low temperature set temperature" or "high temperature zone temperature"
≥
"low temperature set
temperature" + "heating temperature difference". Then the "heating" relay is turned off and the "heating indicator" is turned off.
●
Pump operation: when the "high temperature zone temperature" - "low temperature zone temperature"
≥
the set "start-up temperature difference". "Pump" relay ON,
"pump indicator light" ON.
●
Pump stop: When "high temperature zone temperature" - "low temperature zone temperature"
≤
setting of "stop pump temperature difference". The "water pump"
relay is OFF and the "water pump indicator" is OFF.
●
Automatic watering: When the water level is lower than the “low water level detection” position, the “watering valve” relay is closed, and the “LL” and “low temper-
ature zone temperature” are displayed alternately. The “watering valve indicator” is ON.
●
Stop adding water: When the water level is higher than the “high water level detection”, the “watering valve” relay is OFF and the “watering valve indicator” is OFF.
Note: If water level detection is not required, the high and low water level detection and the water level common port can be shorted together.
Wiring Diagram
High
water level
detection
Water level
public port
Lights NO
.
Function
Setting
range Ex-factory
Value
Unit
NO.1Indicator
NO.1.2 Indicator
NO.2 Indicator
NO.3 Indicator
NO.4 Indicator
Temperature
difference
start
-
up
Temperature
difference
High temperature
correction
Low temperature
correction
Temp
.
difference
of
stopped
pump
+
1
～
5
0
1
～
20
-10
～
10
-10
～
10
5
5
0
2
0
℃
℃
℃
℃
℃
Stop the pump
temperature
1
～
temp
.
difference
started
-
1
Parameters for Procedure
NO.3.4 Indicator
Heating temperature
difference
0
～
20
℃
5
Feature
Descriptions
Failure
Causes
Precautions
No display when power
is on.
Check if the power is broken or the
thermostat failture.
。
Check power supply and change fuse.
Check if the input voltage is right or
change the thermostat with our distributor.
Displaying but machine
doesn't work
The setting temperature is lower than the
present temperature.
The heat protector is open circuit because the
pressure is over loads.
Reset the necessary controlling temperature.
Check the reasons for overload and overheating.
After the trouble is solved, restart to work.
Displayed temperature is
unstable or there exists
misplay.
The sensor is interfered; or poor wiring;
or Together with other power cord bundle
；
or line damage.
Separate sensor wiring with power cables
or change shielded lines or check if the contact
is tight or not.
Measurement error between
current temperature and
displayed.
The installation position of the sensor is not
correct; or the sensor's wiring is too long and
its resistance is over; or the wiring connected
poor; or the sensor is damaged
All sensors should be corrected at their locations.
Enlarge the cross section of the expanded wires.
Make sure the wires sealed is good. or Change the
sensor.
Machine does not stop
when the temperature
reaches.
The sensor is not correctly installed and cannot
measure the correct temperature. Compressor
contactor fails.
Check if the sensor has accurately measured
the temperature or not. Change compressor
contactor.
Relay work with overload
“EH” or “EL” is displayed
Return difference value is too small or the
setting for pressure protection is not correct.
The sensor is opened or shorted circuit.
Reset and enlarge return difference value. Adjust
setting for pressure protection.
Check to see if the sensor wiring has good contact
with coupling end or not.
Trouble shooting
Warnings
1. Please read this product instruction carefully and connect input/output
plugs of power & sensor to the corresponding sockets strictly by following
connection diagram, otherwise the usage & operations will be affected.
Check again to make sure there is no mistake. Tighten all the screw of
connection plugs again, and then connect it to the power for running.
2. Keep away this product from moist or corrosive air and high magnetic
field. Otherwise the normal operation of this product will be affected.
.3. All our products have passed strict quality inspections before leaving
factory. We provide one-year quality guarantee (which is limited to product
itself ,and is not responsible for any other joint and several liability) period
for this product.
Guangzhou Eliweli Autocontrol Tech. Co., Ltd.
http://www.eliweli.com
If the products including but not limited to, the following is not the
product itself quality problem caused by the damage, Install and use
under the do not conform to the safe environment; That the load capacity
is beyond the scope of product is allowed; Products by users to
disassemble and change, change the internal components, etc.,We will
not be so and damaged products provide a replacement and maintenance
services, regardless of whether its in the quality assurance period;
Meanwhile, we will not assume so direct or indirect losses caused by the
liability to pay compensation.
Product warranty date on the case is important basis of product
quality assurance. Appeared including but not limited to full filling
without permission, to change, to replace lost, damaged, scratched, dirty,
and so on, we will not provide a replacement and maintenance services
for these products.
If you have any doubt or problem concerning the electronic
temperature or humidity controller made by us, please contact our
distributors and we will provide you high-quality after-sale services.
Thanks!