ESP Ecocent 300L - 10.0 Faults; 10.1 Simple Fault Finding

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ESP400-10-200L and 300L
terminations on the element. Rewire the immersion heater. Close and secure terminal cover then the refill the
unit.
9.5 Refilling the System:
DO NOT switch on the immersion heater(s) or heat pump part of the unit until the system has been
completely refilled. Close the drain tap. With the hot tap open, turn on mains water supply.
When water flows from the hot tap allow to flow for a short while to purge air and to flush through any
disturbed particles. Close the hot tap and then open successive hot taps in system to purge any air. The
electrical supply can then be switched on.
9.6 Log Book:
Please complete the log book supplied with the Ecocent, stating what has been done, the date of the
service and the name/contact details of the servicing engineer.
9.7 Maintenance Requirements:
There are no formal annual maintenance requirements. However, it is advisable to check annually:
a) That the pressure and temperature relief valve is still functioning well by turning the plastic black
cap around to make sure that water comes out of the valve when the clack cap is turned.
b) Filters for debris.
c) That the air outlet to outside to make sure that it is clear from foliage, nests, etc.
Please note that the top cover of the Ecocent can be removed by a suitably qualified engineer/ plumber so that
the evaporator can be cleaned of dust and debris.
10.0 FAULTS
10.1 Simple Fault Finding
The following table is a list of simple faults and actions that can be taken to clear them. Diagnosis, testing and
repair should be carried out by a suitably qualified an experienced engineer/plumber.
Malfunction
Display
Cause
Solution
Bottom water temp.
sensor failure.
PO1
Sensor is open or short-
circuit.
Check sensor and
change if necessary.
Top water temp
sensor failure.
P02
Sensor is open or short-
circuit.
Check sensor and
change if necessary.
Ambient temp
sensor failure.
P04
Sensor is open or short-
circuit.
Check sensor and
change if necessary.
Coil temp sensor
failure.
P05
Sensor is open or short-
circuit.
Check sensor and
change if necessary.
Refrigerant absorb
sensor failure.
P07
Sensor is open or short-
circuit.
Check sensor and
change if necessary.
Anti-freeze temp
senor failure.
P09
Sensor is open or short-
circuit.
Check sensor and
change if necessary.
Solar temp sensor
failure.
P034
Sensor is open or short-
circuit.
Check sensor and
change if necessary.
High pressure
protection.
E01
Exhaust pressure is too
high.
Check high pressure
switch and cooling
return circuit.
Low pressure
protection.
E02
Suction pressure is too low.
Check low pressure
switch and cooling
return circuit.