18
P9
Low pressure protection
1)
Undercharged refrigerant
2)
Capillary block
3)
Poor connection of pressure switch
4)
Pressure switch failure
5)
Main PCB damaged
1)
Add some refrigerant
2)
Replace the capillary
3)
Reconnect the switch
4)
Replace the pressure switch
5)
Replace the PCB
PC
First step anti-freeze protection in Winter
This function occurs when ambient temp
is too low and unit is in standby
No action needed
PC
Second step anti-freeze protection in Winter
This function occurs when ambient temp
is too low and unit is in standby
No action needed
PL
Water flow failure
1)
Inadequate water flow
2)
Water flow switch damaged
3)
Main PCB damaged
4)
Mis-connect water inlet/outlet
1)
Check the pump
2)
Replace the water flow switch
3)
Replace the PCB
4)
Check inlet/outlet connection
E3
Over-high compressor exhaust gas temp
protection
1)
Refrigerant Undercharged
2)
Possible reasons as E4
1)
Add some refrigerant
2)
Similar corrections as E4
E4
High pressure protection
1)
Inadequate flow rate
2)
Uncompressed gas in refrigerant
system
3)
Overcharge with refrigerant
4)
Water temp setting too high
5)
Poor connection of pressure switch
6)
Pressure switch failure
7)
Main PCB damaged
1)
Check pump and water control
valve
2)
Discharge and them recharge the
refrigerant
3)
Discharge some refrigerant
4)
Set lower water temp
5)
Reconnect the switch
6)
Replace the pressure switch
7)
Replace the PCB
MAINTENANCE
To protect the paintwork, avoid leaning or putting objects on the shell. External Heat Pump parts can be
wiped with a damp cloth and domestic cleaner. (Warning: Never use cleaning agents containing sand,
soda, acid or chloride as these can damage the surfaces.)
To prevent blockages in the titanium heat exchanger, ensure that the system incorporates a water and
filter treatment facility. In the event of a problem occurring due to contamination, the system should be
cleaned as described below. (Warning: the fins on the finned tube heat exchanger are sharp!).
Cleaning the Heat Exchanger and Pipework
Contamination in the pipes and heat exchanger can reduce the performance of the heat
pumps’
titanium heat exchanger. If this is the case, the pipe system and heat exchanger must be cleaned by a
technician.
Use only pressurized drinking water for cleaning.
Cleaning the air system
The finned heat exchanger, fan and condensate outflow should be clear of all obstructions (leaves,
Summary of Contents for LCSPC-120
Page 1: ......
Page 7: ...6 OVERVIEW OF THE UNIT EXPLODED VIEW ECO 30 55 70...
Page 23: ...22 Models LCSPC 120 LCSPC 150 LCSPC 170...
Page 24: ...23 Models LCSPC 210...
