Heatrae Sadia Megaflo Eco SolaReady, Инструкция по эксплуатации

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MAINTENANCE
39
FAILURES WITH ERROR MESSAGE
Some system failure modes can be recognised by the solar differential
temperature controller and will be indicated by an error message on the
controller display. Refer to the table below for details of possible errors
and suggested measures to rectify.
NOTE: These error messages wil automatically reset when the fault has
been rectified. In the case of the circulation error this may take a few
minutes to clear once normal flow has resumed.
FAILURES WITHOUT ERROR MESSAGES
For faults and malfunctions that cannot be displayed, you can use
the following table to identify them, plus evaluate the possible causes
and sources of such erors. If you cannot rectify the fault by using the
description below, you will need to contact your supplier or installer.
IMPORTANT: Any faults involving the 230V/AC mains power supply must
only be rectified by a technician.
Resistance table PT1000.
The correct function of temperature sensros can be checked on the basis
of the following temperature resistance table with a resistance measuring
instrument:
Error displayed
on-screen
Possible
causes
Actions to take
Disruption to
sensor cable
Check cable
Sensor defective Check sensor resistance,
replace sensor if necessary
Short-circuit in
sensor cable
Check cable
Sensor defective Check sensor resistance
replace if necessary
Circulation fault:
no flow-through
Fault in pump
connection
Check cabling
Pump defective Replace pump
Air in the system Vent system
Flow meter
defective
If visible, check whether the
flywheel of the meter moves
when the system is running
Also displayed
with energy yield
measurement:
Grundfos sensor
defective
Check VFS sensor.
Measured voltage at
terminal should be
between 0.5 and 3.5V DC
Connection
to flow meter
defective
Check cable
Disruption to
sensor cable
Check cable
Sensor defective Check sensor resistance,
replace sensor if necessary
Error display Possible causes Actions to take
No possible
display
230V mains power
supply unavailable
Switch on or connect up
control unit
Check fuses for building
power supply
Fuse inside unit
defective
Check fuse*, replace if
necessary with new 2A
(T) fuse.
Check 230V compo-
nents for short-circuits
Unit defective Contact your supplier
Outputs are not
switched on
Unit is in manual
operation mode
Exit “Manual Operation”
menu
Switch-on condition
not yet achieve
Wait until switch-on
condition achieved
“Pump” icon
turns, but pump
is not on
Disruption to pump
connection
Check cable to pump
Pump has seized up Ensure pump can run
smoothly
Switched output has
no current
Contact your supplier
Temperature
display fluctuates
strongly at short
intervals
Sensor cabling has
been laid near to
230V cables
Reposition sensor
cabling, shield sensor
leads
Long sensor cables
extended using
unshielded leads
Shield sensor leads
Unit defective Contact your supplier
!
!
!
!
X
flashing
flashing
X
! +
flashing
X
Temperature
in ºC
Resistance in
Ohm
-30 882
-20 921
-10 960
0 1000
10 1039
20 1077
30 1116
40 1155
50 1194
Temperature
in ºC
Resistance in
Ohm
60 1232
70 1271
80 1309
90 1347
100 1385
120 1461
140 1535
200 1758
Fault finding: