Mitsubishi Electric AE-200A Service Handbook page 67

Hide thumbs Also See for AE-200A:
Table of Contents

Advertisement

[V Troubleshooting]
Symptom
The displayed set
temperature differs from the
set temperature.
16
Air-conditioning units start
operating on their own even
17
though they are supposed
to be stopped.
LOSSNAY units start
operating on their own even
18
though they are supposed
to be stopped.
A schedule does not
operate.
19
Error mail is not sent.
20
Cause
1)
External temperature interlock
control is set.
2)
Peak cut control is being
performed.
3)
A schedule is set.
4)
Interlock control is set.
The setback function is set.
Night purge is set on the LOSSNAY
units.
1)
Incorrect settings are set.
2)
The period settings of the
schedule are incorrect.
3)
The [OK] button was pressed
while the display area in today's
schedule was still blank.
4)
The current time is not correct.
1)
Incorrect settings are set.
2)
Communication is cut off.
3)
The mail is blocked by the mail
server.
Check procedure and remedy
Cause 1) If external interlock control is set, the set
temperature is changed automatically according
to the outdoor temperature.
Check the external interlock control settings.
Cause 2) If peak cut control is being performed, the
temperature may change. Check the peak cut
control settings.
Cause 3) Check whether or not changing of the set
temperature is registered in the schedule settings.
Cause 4) Check whether or not changing of the set
temperature is set in the interlock control.
If the setback function is set to [Use], air-conditioning units
start performing the cooling or heating operation automatically
when a set condition is met while the air-conditioning units are
stopped.
If the night purge setting is set on the LOSSNAY units, the
operation to take in outside air is performed automatically
according to the settings that are set on the LOSSNAY units.
Open the today's schedule screen of the group to be operated
and check the set schedule is displayed. If it is not displayed,
check causes 1) to 3) below.
Cause 1) The schedule settings are retained for each group
so check whether or not the schedule settings of
the group you wish to operate are incorrect.
Cause 2) One of the weekly schedules operates in
accordance with the set period so check whether
or not there is a mistake in the period settings of
the season settings screen.
Cause 3) If the [OK] button is pressed while the display in
the today's schedule settings screen is left blank,
the schedule is handled as having been set not to
operate. If the settings of causes 1) and 2) are set
correctly and a blank area is displayed when the
today's schedule settings screen is opened, the
cause is highly likely to be cause 3). Set the
schedule to be operated again from the today's
schedule settings screen.
Check causes 1) to 3) below.
Cause 1) Check the mail address setting and SMTP server
settings.
For the setting procedures, refer to "3-2-1. Mail
settings" in AE-200/AE-50/EW-50 Instruction
Book (Web Browser for Initial Settings).
Cause 2) Check the following items.
・ Is the power of the HUB turned on?
・ Is the HUB broken?
・ Is the LAN cable disconnected?
・ Is the LAN cable 100 m (328 ft) or less?
・ Is a straight LAN cable of category 5 or better
being used?
Cause 3) Port 25 (SMTP) (factory default setting) is used for
sending mail of the AE-200/AE-50/EW-50. Mail
sent using port number 25 may be blocked by the
mail server for security enhancement purposes.
If it is blocked, sending will not be possible so
consult with the information system administrator.
After checking causes 1) to 3), check whether or not error mail
is sent.
Method: Register an unconnected indoor unit or local remote
controller in the group registration screen of the
AE-200/AE-50/EW-50 in order to generate an error and then
check whether or not error mail is sent.
63

Hide quick links:

Advertisement

Table of Contents
loading

This manual is also suitable for:

Ae-200eAe-50eEw-50eEw-50aAe-50a

Table of Contents