90
Display message
W a
t
e r
p
r
e s s u
r
e
f
a u
l
t
9 9 9
,
5
h
r
s
Reason
System water pressure is too high or too low.
Cause:
The water pressure in the system is too high.
Corrective Action:
Check if the system pressure is too high after (re)filling.
Check the settings of any automatic pressurisation unit attached to the system.
Cause:
The water pressure in the system is too low.
Corrective Action:
Display message
L
i
n
e
f
a u
l
t
p u m p
o n
9 9 9
,
5
h
r
s
Reason
Incorrect electrical power supply
Cause:
The electrical power supply does not comply with specifications.
Corrective Action:
Check if the power supply is connected correctly to the unit. Refer to
Section 11.0
of this document.
Check the voltage and frequency. The electrical supply should be 230VAC 50Hz 1ph.
Make sure there is no signal fouling or voltage peaks in the power supply.
Display message
O u
t
d o o
r
s e n
s o
r
f
a
i
l
9 9 9
,
5
h
r
s
Reason
No outdoor sensor detected.
Cause:
Corrective Action:
Check for loose wiring/connections in the outdoor sensor circuit.
Check the condition of the outdoor sensor and replace if necessary.
Display message
H e a
t
e x c h
a n g
a
t
r
i
s k
9 9 9
,
5
h
r
s
Reason
Cause:
Low water flow.
Corrective Action:
Check the pump for correct operation.
Check that all valves that may restrict the water flow through the unit are fully open.
Check for an external system pump that influences the flow through the boiler.
Check if the system resistance exceeds the spare capacity of the integral pump.
Check the heating system for leaks and repair as necessary.
Where fitted to an open vented system, check to ensure that the header tank gives a static head of at least 1.0 bar.
The boiler is programmed to give outside temperature compensation but does not detect an outdoor sensor.
Make sure that there is a pressure relief valve and expansion vessel installed in the system, according to the applicable
standards.
Ensure that any external system pump cannot cause an under pressure situation in the boiler. Wherever possible, a low-
velocity header should be used to separate the boiler from the system.
Clean the water circuit of the heat exchanger. A partial blockage of the heat exchanger will increase the resistance
causing the water flow to drop.
The temperature difference between flow and return has exceeded the blocking temperature
3 times, causing the unit to run in reduced input mode.
Содержание CP-M Series
Страница 5: ...5 2 0 PRINCIPAL PARTS FIGURE 2 1 REMOVABLE COMPONENTS CP M 60...
Страница 6: ...6 FIGURE 2 2 REMOVABLE COMPONENTS CP M 60 CONTINUED...
Страница 8: ...8 FIGURE 2 3 REMOVABLE COMPONENTS CP M 80 CP M 100...
Страница 9: ...9 FIGURE 2 4 REMOVABLE COMPONENTS CP M 80 CP M 100 CONTINUED...
Страница 11: ...11 FIGURE 2 5 REMOVABLE COMPONENTS CP M 120...
Страница 12: ...12 FIGURE 2 6 REMOVABLE COMPONENTS CP M 120 CONTINUED...
Страница 14: ...14 FIGURE 2 7 REMOVABLE COMPONENTS CP M 150 CP M 180...
Страница 15: ...15 FIGURE 2 8 REMOVABLE COMPONENTS CP M 150 CP M 180 CONTINUED...
Страница 94: ...94...
