OPERATING AND MAINTENANCE MANUAL
Chapter 10 - Troubleshooting
TAEevo Tech 015÷802 60 Hz UL
189
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EN
ENGLISH
C
HAPTER
10
T
R O U B L E S H O O T I N G
PROBLEM
CAUSE
SYMPTOM
REMEDY
A
Tank water outlet
temperature
BTWOT
higher than prescribed
value.
A1
Thermal load too high.
A1.1
BTWOT
temperature
higher than prescribed
value.
Restore thermal load to within
prescribed limits.
A2
Ambient temperature too
high.
A2.1
See A1.1.
If the unit is installed in an
enclosed place, reduce ambient
temperature to within the
prescribed limits, for example
by increasing room ventilation.
A3
Condenser fins fouled.
A3.1
See A1.1.
Clean the condenser fins.
A4
Front surface of
condenser blocked.
A4.1
See A1.1.
Remove the obstruction from
the front surface of the
compressor.
A5
No refrigerant fluid in the
circuit.
A5.1
• See A1.1;
• Low evaporation pressure;
• Check for the presence of a
large number of air bubbles on
the liquid sight glass.
Call in a qualified refrigeration
engineer to check for leaks and
eliminate them.
Have the circuit charged by a
qualified refrigeration engineer.
A6
Compressor protection
trips.
A6.1
• The head and the body of the
compressor are very hot;
• The compressor stops and
attempts to restart after a short
time (even few seconds).
Call in a qualified refrigeration
engineer to check for leaks and
eliminate them.
Have the circuit charged by a
qualified refrigeration engineer.
B
Insufficient pressure head
(water pressure) at the
pump outlet.
B1
Excessively high water
flow rate. The pump is
running outside its
operating limits (high
flow rate, low pressure
head, high power
consumption).
B1.1
• Possible increase in outlet
temperature
BTOWT
(See A1.1);
• With pump installed on unit:
pump running - pump stopped
pressure difference read on
unit pressure gauge is too low;
• Possible pump thermal trip.
Restore flow rate to within
prescribed limits, for example
by partially closing a pump
outlet cock.
Reset pump thermal cutout and
check electrical power
consumption.
B2
See point C.
B2.1
See point C.
See point C.
B3
Evaporator clogged by
impurities conveyed by
the user circuit water.
B3.1
High temperature
difference between water
inlet and outlet.
In relation to the type of
fouling:
• Clean the evaporator by
flushing it with a mild
detergent suitable for steel,
aluminium and copper;
• Supply a high flow rate of
water in countercurrent
conditions.
Install a filter upline from the
unit.