Sinclair SCV-EB Series Service Manual page 67

5.22 P1 Troubleshooting
5.22.1 Digital display output
5.22.2 Description
 High pressure switch protection
 Error code is displayed on the refrigerant system PCB digital tube and user interface..
5.22.3 Procedure
High pressure switch connection is loose
Too much refrigerant is charged in the
The water flow rate is not sufficient in
heating/DHW mode(Check water
pressure on the manometer. If the water
pressure is not > 1 bar, water flow is
The air side heat exchanger heat
exchange is poor in heating or DHW
Small heat exchange area of water
tank internal coil with poor heat
exchange or water tank volume is too
P1
No
system
No
insufficient.)
No
mode
No
small
No
Ensure the pressure switch is connected
Yes
1
Yes
Release the right amount of refrigerant
Check water side heat exchanger, water
piping, circulator pumps and water flow
Yes
switch for dirt/blockages in order to
increase the water flow rate
Yes
Check air side heat exchanger, fan(s) and
air outlets for dirt/blockages.
Select a water tank with larger volume or
Yes
with bigger coil heat exchange area
properly
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