Biddle SensAir, Manual

Page: 72 / 208

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4.3 Remedying errors that are accompanied by an error message
Try to remedy errors that are accompanied by an error message,
making use of the error codes table. Technical expertise is needed
for this.
C
ODE
P
ROBABLE CAUSE
W
HAT TO DO
E1 The control panel does not communicate
with one or more connected units.
This error may occur:
• when a connected unit is removed or
replaced,
• due to a brief error in the power supply
of a connected unit,
• due to incorrect cabling,
• due to a fault.
1. Check whether all connected units are provided with
mains supply.
2. Check whether the dummy plug on terminal X535 of
the last connected unit is present.
3. Check the control cables:
• are they correctly connected and free of breaks?
• are they stretched out or rolled up in a bifilar coil?
• are they shielded from magnetic fields?
4. Check the fuses.
5. Check the wiring between the control panel and con-
nections X530 and X535 in the unit.
6. Reset the system if the error message does not auto-
matically disappear.
E2 There are units connected that have an inva-
lid or unknown unit code, or an invalid com-
bination of unit types. Check and compare the unit types on the type plate. The
units must have the same battery type and preferably the
same capacity.
The control panel software is outdated. Check the version number of the software via
menu > Maintenance > Status .
The control panel has power but is not com-
municating with any unit. 1. Check the control cables:
• are they properly connected and fully intact?
• are they stretched out or rolled up in a bifilar coil?
• are they shielded from magnetic fields?
E3 For electrically heated models:
The resistor on the printed circuit board for
electric heating is not functioning properly.
1. Clear the error message.
2. Check the connection of the R1.6K on the EVW
printed circuit board. (see the wiring diagram)
If this is in order: replace the resistor.
E4 For electrically heated models:
A high-limit thermostat has switched the unit
off: this is protection against overheating.
This error may occur:
• if the unit has been temporarily without
power, e.g. due to a power failure;
• if the filter is dirty and lets insufficient air
through.
In other cases, there may be a serious
fault that may pose a risk to people.
1. Clear the error message.
2. Check the fans. If one or more fans do not work,
check:
• the fan wiring;
• the connection on the control circuit board (X344);
If these are in order, then replace the fan.
3. Check the filter for contamination. Clean or replace
it if necessary.
Contact Biddle if this error occurs repeatedly.