Fault Recall; Dehumidification - Amana AVPEC Series Installation & Operating Instructions Manual

3. Each time FAULT RECALL button is pressed after that
segment display outputs next occurred fault.
4. After displaying the series of recent faults, 7 segment
displays blink "- -" and goes back to Standby Mode.
To clear the error code history:
1. Press FAULT RECALL button for 10 to 15 seconds
that 7 segment displays blink "- -".
2. Release FAULT RECALL button in this period, 7 segment
displays show "88" and faults are cleared.
NOTE:
* If FAULT RECALL button is not pressed long enough (for 2 to 5 seconds),
control goes back to Standby Mode.
If the FAULT RECALL button is pressed for 5 to 10 seconds, control goes back
to Standby Mode.
** Consecutively repeated faults are displayed a maximum of three times.
*** If FAULT RECALL button is help pressed for longer than 15 seconds, control
goes back to Standby Mode.

15.4 Dehumidification

The thermostat reads the indoor humidity level from the CTK04
and allows the user to set a dehumidification target based on these
settings. The thermostat controls the humidity level of the condi-
tioned space using the cooling system. Dehumidification is engaged
whenever a cooling demand is present and structural humidity lev-
els are above the target level. When this condition exists the circu-
lating fan output is reduced, increasing system run time, over cool-
ing the evaporator coil and ultimately removing more humidity from
the structure than if only in cooling mode. The CTK04 also allows
for an additional overcooling limit setting from 0 °F to 3 °F setup
through the Installer Option menu (direction below). This allows
the cooling system to further reduce humidity by lowering the tem-
perature up to 3° F below the cooling setpoint in an attempt to
better achieve desired humidity levels.
By default dehumidification needs to be turned ON at the thermo-
stat via the Dehumidification Equipment menu. Dehumidification
can be activated at the original equipment setup by selecting the
A/C with Low Speed Fan button in the Dehumidification Menu.
Availability can be verified by pressing MENU on the home screen.
Scroll down and if a Dehumidification button is present dehumidi-
fication is activated.
If Dehumidification is not available in the menu then it must be
enabled through the Installer Options menu. Use the following pro-
cedure to enable and disable dehumidification:
1. On the CTK04 HOME screen, select MENU.
2. From the MENU screen, scroll down and select Installer Op-
tions.
3. Enter installer password if known.
a. The password is the thermostat date code and can be ob-
tained by selecting the red Cancel button and selecting the
Dealer Information button.
b. Once recorded click the green OK button and return to the
previous step.
4. Select YES to continue.
5. Select View / Edit Current Setup.
6. Scroll down and select Dehumidification.
7. Once open select Dehumidification Equipment: None.
8. From the Dehumidification Menu select A/C with Low Speed
** , 7
Fan and click the green Done button.
9. Additional Dehumidification operational options can be se-
lected in the resulting window.
10.Once satisfied with the selection navigate to the HOME
screen by selecting the Done button and selecting Yes to
verify the changes.
*** , so
11.Select Previous Menu, then the HOME to return to the main
menu.
DEHUMIDIFICATION TIPS
For effective dehumidification operation:
• Ensure "Dehum" is ON through the Installer Options menu
and/or in the ComfortNet User Menu (COOL SETUP).
- If ON, the Dehumidification menu should be visible in
the main menu.
• Verify the cooling airflow profile is set to "Profile D".
- See the Cool Set-up section of the Installation Manual
for com comlete airflow profile details.
- By default "Dehum" is ON and the cooling airflow pro-
file is set to "Profile D".
• For additional dehumidification control, airflow settings are
field adjustable and can be fine-tuned to a value that is com-
fortable for the application from a range of +15% to -15%.
- See the Heat Pump Advanced Feature Menu section of
the Installation Manual for more detail.
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