Oilon ESi 6-17, Installation And Operation Manual

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Problem Cause Solution
The control system does not start
the pump.
Check the measured values and
setpoints.
Shut-off valves are in the fill
position.
Check that the fill and bleed
valves are closed and the valve
between them is open.
The plugs for the brine pump
haven’t connected to the control or
power board.
Make the necessary connections.
The system is in manual control
mode.
In the Maintenance menu, disable
manual control, or restart the heat
pump.
Air in the brine circuit. Bleed the brine circuit.
Leak in the refrigerant circuit. Contact the installer or dealer.
Dirt in the T strainer.
Check the T strainer and clean it if
necessary.
Insufficient amount of brine in the
brine circuit.
Check the level in the fill bottle (if
present). Add brine if necessary.
You may also have to bleed the
circuit.
The compressor only runs for
a short while after which the
evaporator pressure switch is
tripped.
Closed valve in the circuit.
Check all valves, and open any
that are closed.
The compressor only runs for
a short while after which the
condenser pressure switch is
tripped.
Air in the condenser circuit or the
condenser pump.
Bleed the condenser circuit
(between the heat pump and
the storage tank). Open the
condenser pump’s casing and
check that the impeller rotates.
The fluid level in the brine circuit’s
fill bottle drops suddenly after the
system has been started.
A leak in the equipment
(accompanied by a strong smell of
ethanol), or either a leak or air in
the brine circuit.
Check the condition of the
following:
● Fill and bleed unit valves
● Deaerator
● Shaft seal for the brine pump
● Brine circuit unions (If
possible)
Bleed the circuit of air.
Short-circuit in the compressor. A
phase is missing.
Check the electrical connections.
Motor protection circuit breakers
are tripped during start.
Tripped or blown fuse or fuses in
the building’s distribution board.
Check the fuses and replace if
necessary.
26 (75) M8010 2204EN