Poor Dehumidifi Cation - Bosch IDS 2.0 Service Manual

Service Manual
12.4.4 Poor Dehumidifi cation
LED display output:
Description:
Possible causes:
Table 50
Procedure:
Figure 37
Bosch Thermotechnology Corp. | 07.2021
No fault code displayed
System is running, but not dehumidifying the space to customer's expectation
 Unit improperly sized
 Duct work design error
 Unit improperly charged
 Improper indoor fan speed
No
Is the unit sized
Confirm sizing via load
correctly for the
application?
Yes
No
Was ductwork
Refer to IOM and follow
installed properly?
Yes
No
Is the system
Refer to IOM
properly charged?
Yes
No
Is there still poor
No service required
dehumidification?
Yes
Change SW4-4 to on
position on outdoor board.
Set indoor fan to lower
speed using SW6-1, SW6-2
on indoor board
No
Is there still poor
No service required
dehumidification?
Yes
Disconnect Y2. Only Y1
should be connected.
No
Is there still poor
No service required
dehumidification?
Yes
Consider putting a third
party dehumidifier in
conditioned space
calculation
local codes
Bosch IDS 2.0 | 63
Data subject to change