Amana AHVE Series User Manual

16
15.4 Accessory Contacts (Humidier Relay)
The control is equipped with an Accessory Relay and a
pair of ¼ inch accessory terminals which is normally open,
labeled ACC-IN and ACC-OUT (see accessory contacts
graphic). The Accessory Relay can be congured to close
with humidication functionality or to close anytime the
blower is running. A closed relay means the two terminals
will have continuity between them (the control does not
energize these contacts). The set-up menu is where this
conguration takes place.

For the setup for humidication functionality, the ac-
cessory terminals have 3 operational modes.
1. ON: Humidier is only enabled during a call for
heat. During a heat call the accessory relay will
close only if there is an active call for humidi-
cation from the thermostat. Otherwise, the relay
will be open.
2. OFF: Humidier remains o󰀨 (relay never closes).
3. IND: Humidier will cycle with any active call for
humidication from the thermostat (independent
of a heat call). The relay will remain open during
cooling operation. This mode also allows the
user to select one of 4 fan speeds (25, 50, 75,
and 100%). The fan speed will be used when
the system is in an idol state and a call for hu-
midication is made by the thermostat.

When the Accessory Relay is setup as With Blower,
the relay will be closed anytime the blower is running.

16.1 Electrostatic Discharge (ESD) Precautions
 Discharge body’s static electricity before touching
unit. An electrostatic discharge can adversely a󰀨ect
electrical components.
Use the following precautions during air handler installa-
tion and servicing to protect the integrated control module
from damage. By putting the air handler, the control, and
the person at the same electrostatic potential, these steps
will help avoid exposing the integrated control module
to electrostatic discharge. This procedure is applicable
to both installed and uninstalled (ungrounded) blowers.
1. Disconnect all power to the blower. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic
charge to ground.
2. Firmly touch a clean, unpainted, metal surface of the
air handler blower near the control. Any tools held in
a person’s hand during grounding will be discharged.

Figure 18
ACC-IN
(TB 6)
ACC-OUT
(TB 8)
Peripheral devices to be
linked (Example: Humidifier)
10A max: 250VAC
5A max: 30VDC
Faston Size: 250
7 Segment
Diagnostic
Displays
Fault
Recall
Figure 19
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use cau-
tion not to recharge your body with static electricity;
(i.e., do not move or shu󰀪e your feet, do not touch
ungrounded objects, etc.). If you come in contact with
an ungrounded object, repeat step 2 before touching
control or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a blower. Return any old or
new controls to their containers before touching any
ungrounded object.
16.2 Diagnostic Chart
Refer to the Troubleshooting Chart at the end of this
manual for assistance in determining the source of unit
operational problems. The 7 segment LED display will
provide any active fault codes.
16.3 Fault Recall
The integrated control module is equipped with a momentary
push-button switch that can be used to display the last six
faults on the 7 segment LED display. Follow the sequence
to use the feature. The control must be in Standby Mode
(no thermostat inputs).

Amana AHVE Series Specifications

General

Brand	Amana
Model	AHVE Series
Category	Air Handlers
Language	English