elco Aquatop TC Series, Руководство по эксплуатации, Страница: 36 / 48

36
Troubleshooting
Troubleshooting AQUATOP LOGON WP
Malfunction Cause Remedy, Action
223: HP when starting HC
High pressure malfunction
when starting heating circuit.
A Water in system too cold. A Below 10 °C: Increase temperature in system
with electr. immersion heater.
224: HP when starting potable
water
heating
High pressure malfunction
when starting PWH.
Service water operation.
A
Boiler charging pump/3-way valve not running
B Air in system
C Slider closed
D Heat exchanger too small
E Sensor positioned incorrectly (too low)
A
Unblock pump/3-way valve or replace
B Vent system
C Open slider, check flap valve
D Check with retailer
E Mount sensor correctly
226: Coil guard compressor A Phase interrupt (compressor is getting hot) A Check all three phases (wait until
coil guard has cooled down, this may take
several hours).
225: Low pressure malfunction Low pressure compressor E9
Low pressure pressure controller triggered in
cooling circuit.
A
Insufficient flow of brine-water in evaporator
B
Leak in cooling circuit
C
Pressure controller defective
D Plugged
filter
E
Defective or blocked injection valve
F
Incorrect amount of coolant
A
A1 Blocked brine pump, make brine pump
function
again
A11 Defrost thickened brine in evaporator
(remove insulation, use hairdryer to melt or let
sit for 1 day)
A2 In case of inhomogeneous brine mixtures, the
brine may become thickened in the evaporator.
A21 Better mixing of brine
B
If all items above have been checked and of the
compressor switches to low pressure malfunction
within a few seconds after being started, then the
cooling circuit has a leak.
Oil residues in the unit are another indicator of a
leak in the cooling circuit (do not mistake oil for
brine).
B1 In case of a leak in the cooling circuit,
the cooling service technician must be called.
C
Check switching point (important: depends on
coolant type)
D
Measure temperature upstream and downstream
of filter (AT max 2 K)
E
Check or replace injection valve
Check and insulate sensor
F
Empty and recharge acc. to type plate.