Johnson MANANTIAL Serie Manual De Instrucciones página 30

D. Operation panel instruction
4. Error Handling:
ERROR CODE
ERROR STATUS
A1 Thermal sensor alarm
A2
A3 Exhaust sensor alarm
A4
A5
A6
A7
Screen no display or
- -
display insufficiency
NOTE:
1. When the unit has error, the buzzer of the operation panel will make an alarm sound, and
there will show "Alarm" on the screen panel.
2. "ERROR CODE" will show on temperature display location by alternately.
3. Part of the error alarm can be automatically restored (resumed). That is the appeared alarm
can be eliminated by electronically controlled self-test.
4. Some of the error alarm is caused by large fluctuation of the external power, by this, just power
off and restart the unit to clear the error.
5. When the machine has error alarm and restart still can not eliminated error, please contact
the after service as soon as possible for solution.
Water temp. sensor open
circuit or short circuit.
Condenser coil
sensor alarm
Exhaust temp. sensor open
circuit or short circuit.
Ambient temp. sensor open
Ambient temp.
circuit or short circuit.
sensor alarm
1.1. High pressure protection
1.2. Ambient temp. too high or
Low /High
water heat exchanger dirty block.
pressure alarm
2.1. Low pressure protection
2.2. Leakage of refrigerant.
(Auxiliary) electric
1. Electric heater protection
heater protection
overheat alarm
2. Tank water temp. too high.
1. Lack of refrigerant.
Exhaust
2. Mix with air in system.
temperature too
high
3. Lack of lubricating oil.
1. No plug in power.
2. Mainboard and operation
panel communication break off.
REASONS
Condenser coil
temp.sensor open circuit or
short circuit.
switch off.
switch off.
switch off.
10
ERROR HANDLING
1. Check the water temp. sensor
connection.
2. Change the water temp. sensor.
1. Check the condenser coil
temp. sensor connection.
2. Change the coil sensor.
1. Check the exhaust temp. sensor
connection.
2. Change the exhaust temp. sensor.
1. Check the Ambient temp. sensor
connection.
2. Change the ambient temp. sensor.
1.1Check or change the high pressure
protector.
1.2. Check if the surround temp. is too
high, or clean the heat exchanger of
water tank.
2.1. Check or change the low pressure
protector.
2.2. Supply refrigerant and check if there
is any leakage.
1. Check if the water temp. is as LCD
display, or if water temp. is too high.
2. Change the Electric heater.
1. Supply refrigerant.
2. Re-vacuumizing, and fill in
refrigerant.
3. Change the lubricating oil of
compressor.
1. Check the power line and voltage.
2. Reconnect the line of mainboard and
operation panel.
3. Change the mainboard or operation
panel.
V.1