Johnson MANANTIAL Serie Manual De Instrucciones página 29

4. Error Handling:
ERROR
CODE
A1
A2
A3
A4
A5
A6
A7
A8
A9
Screen no display or
- -
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.
ERROR STATUS
Thermal
sensor alarm
Condenser coil
sensor alarm
Exhaust sensor
alarm
Ambient temp.
sensor alarm
Low /High
pressure alarm
(Auxiliary) electric
heater protection
overheat alarm
Exhaust
temperature too
high
Condensate drain
hole blocked
Return gas temp.
sensor alarm
display insufficiency
REASONS
Water temp. sensor open
circuit or short circuit.
Condenser coil temp.
sensor open circuit or
short circuit.
Exhaust temp. sensor open
circuit or short circuit.
Ambient temp. sensor
open circuit or short circuit.
1.1. High pressure protection
switch off.
1.2. Ambient temp. too high or
water heat exchanger dirty
block. 2.1. Low pressure
protection switch off. 2.2.
Leakage of refrigerant.
1. Electric heater
protection switch off.
2. Tank water temp. too
high.
1. Lack of refrigerant.
2. Mix with air in system.
3. Lack of lubricating oil.
1.Condensate pipe blocked
2.Machine drain hole blocked；
Return gas temp. sensor
open circuit or short circuit.
1. No plug in power.
2. Mainboard and opera-tion
panel communication break 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.
1.1 Check 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 condensate pipe is
blocked or not.
2.Check machine drain hole is
blocked or not.
1. Check the Return gas temp. sensor
connection.
2. Change the ambient temp. sensor.
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