Aqua-Air Tempwise 2001 User manual

Aqua-Air Tempwise 2001
Direct Expansion Digital Thermostat
Operating Manual
Aqua-Air Manufacturing
division of the James D. Nall Co., Inc.
1050 East 9th Street
Hialeah, FL 33010 U.S.A.
Phone [phone] Fax [phone]
Email: [email protected]

Tempwise 2001 Direct Expansion Digital Thermostat Manual
Tempwise 2001 Direct Expansion Digital Thermostat
Aqua-Air Manufacturing
1050 East 9th Street
Hialeah, Florida 33010 U.S.A.
Contents
Introduction ......................................................... 1
BasicOperation ..................................................... 2
OperatorControlsandDisplayPanel .................................... 4
Dual Button Functions ................................................ 7
Special Button Functions ............................................. 7
ModesofOperation .................................................. 8
FanModes......................................................... 10
ProgramMode...................................................... 10
Programming ...................................................... 13
DefaultSettingsTable ............................................... 13
FailSafeandFaultHandlingCodes .................................... 18
FactorySelfTests................................................... 20
Service Tools ...................................................... 20
SpecialHardwareInstructions ........................................ 22
Specifications ...................................................... 24
Trouble Shooting Guide .............................................. 26
Copyright © 1997 Micro Air Corporation, All Rights Reserved
No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted on any form or
by means electronic, mechanical, photocopying, recording or otherwise without prior written consent by Micro Air
Corporation.
Every precaution has been taken in the preparation of this manual to insure its accuracy. However, Micro Air
Corporation assumes no responsibility for errors and omissions. Neither is any liability assumed for damages
resulting from the use of this product and information contained herein.

Tempwise 2001 Direct Expansion Digital Thermostat Manual
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INTRODUCTION
The Tempwise 2001 Control is designed for use with Aqua-Air Direct Expansion,
reverse cycle Air Conditioning Systems. The Tempwise 2001 has a universal power
supply that operates on 115V or 230V, 50 or 60 Hz AC power. The Tempwise 2001
includes the following standard and optional features:
Standard Features
User friendly 6 button display panel
Five volt logic and micro controller located in the display
3-digit 7-segment display indicates /F or /C
Paintable Face Plate Cover with recess for matching wall covering insert
Automatic fan speed reduction as set point is approached
Six (6) programmable manual fan speeds
16 programmable parameters for custom installations
AC voltmeter to protect valuable electrical components
High and Low Refrigerant pressure sensor inputs
Moisture Mode for controlling relative humidity
De-Icing cycle to prevent evaporator coil icing
Programmable multiple compressor staging delays
Universal AC power supply
Nonvolatile memory retains settings without batteries
Programmable display brightness control for night use
Optional Features
The following optional items can be added by plugging the device into the appropriate
jack and making the necessary programming changes:

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Outside Air Temperature Sensor - No programming necessary
Alternate Air Temperature Sensor - No programming necessary
Custom painted display panels
Pump Guard water sensor
This manual is intended to provide information necessary to insure proper installation
and operation of the Tempwise 2001. Poor installation and/or MISUNDERSTOOD
operating parameters will result in unsatisfactory performance and premature failure of
the Tempwise 2001.
Read This Manual Completely Before Proceeding!
If you require assistance prior to or during the installation of the Tempwise 2001 call
Aqua-Air at [phone] or Fax your questions to Aqua-Air at [phone]. The
Tempwise 2001 is covered under existing Aqua-Air Manufacturing Warranty Policy.
Incorrect installation, neglect and system abuse are not covered under Aqua-Air's
warranty policy.
NOTE: In order to continually improve the Tempwise 2001 Control, Aqua-Air
reserves the right to change this product’s basic operation, specifications and
design criteria without prior notice.
BASIC OPERATION
The Tempwise 2001 is a user friendly, easy to operate, programmable temperature
control.
• Press the Power button once to engage the system. The display indicates room
temperature when the system is on and the display is blank when the system is off.
• Press and release the Mode Button until the desired Mode LED is illuminated.
• Set the room temperature by pressing the up or down button. The set point can be
viewed by momentarily pressing and releasing the up or down button.
Fan speed operation is automatic. The fan speed decreases as set point temperature
is approached. The fan will operate at low speed when set point is satisfied. Manual
fan speeds can be selected by pressing the Fan Speed Button and selecting the desired

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fan speed. The fan will operate at the speed selected and will not change speeds with
room temperature.
The fan can be programmed to cycle on and off with the Heating and Cooling demand.
Normally the automatic fan speed operation is reversed in the heating mode, however,
the fan speeds can be programmed to operate the same as in the cooling mode.
NORMAL HEATING OR COOLING CYCLE
Select Cool only and cooling only will be supplied. The cabin temperature will be
maintained within 2/F of the set point. Select Heat only and only heating will be
supplied. The cabin temperature will be maintained within 2/F of the set point.
Select Automatic and both heating and cooling will be supplied as required. While in the
automatic Mode Tempwise 2001 will maintain a two degrees Fahrenheit (2 /F)
temperature variation. A four degree swing is required to cause the unit to shift to the
opposite mode. Once in a given mode, heating or cooling, Tempwise 2001 will maintain
a two degree differential.
When the Heating or Cooling demand is satisfied, the compressor cycles off and the
Automatic Fan returns to low speed. The fan speed will remain constant if Manual Fan
Speed has been programmed.
REVERSING VALVE OPERATION
The reversing valve is toggled to the opposite mode when heating or cooling is required
to reduce the compressor starting surge. The valve will only toggle to the opposite
mode when a cooling or heating cycle is called for and if the system has been off for
less than seventy-five (75) seconds. The valve will also toggle if a cycle is interrupted
from the display panel by pressing the power button ON/OFF, or changing the set point.
Unnecessary valve toggling has been limited to reduce reversing valve noise. Valve
toggling can be totally eliminated by programming the minimum compressor staging
delay at seventy-five seconds (75) or greater.
Power on reset, which occurs when the system is powered up, will always initiate a
valve toggle.

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MOISTURE MODE
While in the On mode, press the Mode Button until the Moisture Control LED is lit.
Every four (4) hours, the fan is started and air circulated for thirty (30) minutes. During
this time the air temperature is sampled and entered into memory. The cooling cycle is
started and continues until the temperature is lowered 2/F. The system is allowed a
maximum of one hour running time to reach the desired temperature. Four (4) hours
after the temperature is satisfied or the Cooling Mode times out, the cycle is repeated.
During the humidity cycle the water valve LED is lit while the system is cooling.
MEMORY
The Tempwise 2001 has nonvolatile memory which requires no batteries or any form of
backup power. When power is lost the operating parameters are retained indefinitely.
When power is restored, the control resumes operating as last programmed. All
operating and programming parameters are entered into nonvolatile memory instantly
and are retained indefinitely.
OPERATOR CONTROLS AND DISPLAY PANEL
Refer to Figure 1 for the buttons locations and display functions listed on the following
pages.
1. POWER BUTTON - The power button is used to toggle between the On and Off
modes. Press the power button once to toggle the unit to the On mode. Press the
power button again to toggle to the Off mode.
2. FAN SPEED BUTTON - Press and release the Fan Button to advance from auto
fan to manual fan. Press and release the fan speed button to advance the manual
fan speeds, 1 through 6. Press and release again to return to the automatic fan
mode. The selected fan mode is indicated by the auto and manual fan LED’s.
3. UP BUTTON - Momentarily press the up button and the set point will appear in the
temperature display. Press and release the up button to increase the set point one
degree. The set point Is increased by one degree each time the up button is
pressed and released. The highest set point allowed is 85/F. The up button is used
with the down button to display the Water In temperature when the control is on.
The up button is also used to increase program values in the program mode.

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4. DOWN BUTTON - Momentarily press and release the down button to display the
set point. Press and release the down button to decrease the set point. The set
point is decreased one degree each time the down button is pressed and released.
The lowest set point allowed is 55/F. The down button is used in conjunction with
the up button to display Water In temperature when the control is on. The down
button is also used to reduce program values in the program mode.
Tempwise 2001 Display Panel
Figure 1: Tempwise 2001 Control Buttons and Indicator Displays
5. MODE BUTTON - The mode button is used to select one of the four operating
modes. Press and release the mode button and the Tempwise 2001 will advance
to the next mode. Continue to press and release the Mode button until the
desired operating mode is reached. The mode selected is indicated by the Mode
LED, i.e., Cool, Heat, Automatic or Moisture Mode.

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6. TEMP SELECT BUTTON - Press and release the Temp Mode Button to view
inside air temperature, outside air temperature (optional) or the set point. The
appropriate LED, Inside, Outside or Set Point will be lit indicating which
temperature is being displayed. If no outside air sensor is installed three (3)
dashes will appear in the Three Digit Display.
7. THREE DIGIT SEVEN SEGMENT DISPLAY - The inside air temperature is
displayed in the window whenever the control is turned on. The three digit 7
segment display provides a readout of the return air temperature. The display
also indicates program information, fault codes and outside air temperature when
the optional outside air sensor is installed. The display momentarily indicates the
set point when the up or down button is pressed. When the control resumes
operation after a power interruption all the display LEDs will turn on for one
second. This is a normal operating condition and is referred to as "Power On
Reset".
8. HEAT MODE LED - The heat mode LED will be lit when the Heat Mode has been
selected. The heat mode LED is also lit when the optional electric heat is installed
and the beat mode is selected. Electric heater status, on or off, is indicated by the
right side decimal point (18).
9. COOL MODE LED - The cool mode LED will be lit when the Cooling Mode has
been selected.
10. AUTO LED - The auto LED is lit when the automatic heating or cooling mode has
been selected. The control will automatically switch to heating or cooling when
this mode is selected.
11. MOISTURE CONTROL LED - The moisture mode LED is lit when the Moisture
Control has been selected. This mode is used to control humidity during periods
when the vessel is unoccupied.
12. MANUAL FAN LED - The manual fan LED will be lit when one of six manual fan
speeds has been selected.
13. AUTO FAN LED - The auto fan LED is illuminated when automatic fan speed
operation has been selected.

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14. FAN SPEED BAR GRAPH - There are six (6) individual fan speed LED's in the
Fan Speed Bar Graph. Each LED represents one (1) fan speed. Low fan speed
(1) is indicated by illuminating the first LED. High fan speed is indicated by
illuminating all six (6) LED's. Any of the six (6) fan speeds available are displayed
by illuminating the appropriate LED's.
15. INSIDE LED - The inside LED is lit when the inside air temperature is being
displayed.
16. OUTSIDE LED - The outside LED is turned on when the outside temperature is
displayed (optional).
17. SET POINT LED - The set point LED is turned on when the set point is displayed.
18. VALVE LED - The water valve operating status (Open or Closed) is indicated by
turning on the right most decimal point in the 3 Digit Display.
DUAL BUTTON FUNCTIONS
Up & Down Buttons....Press the Up and Down buttons together and the outside air
temperature will be displayed, provided the OPTIONAL OUTSIDE AIR TEMPERATURE
SENSOR has been installed. No programming is required.
Press the UP & Down Buttons simultaneously, while in the program mode, to set new
custom programming defaults.
Power and Down buttons.... Simultaneously press the power and down buttons while
viewing the Service Fault History Log clears the Fault History Log.
SPECIAL BUTTON FUNCTIONS
Special button functions are implemented by pressing and holding a particular button
while the controls’ AC power is turned on.
1. Service History Log... View the service history log by pressing and holding the
Mode Button while turning on the AC power. Exit the service history log by pressing the
power button once. Clear the service history log by simultaneously pressing the power

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and down buttons.
2. Self Test Mode... Press and hold the power button while AC power is applied to
enter the self test mode, The self test is used to diagnose problems and test the air
conditioning system. For complete details see page 14 of this manual.
3. View Hour Meter... To view the compressor hour meter, press and hold the down
button while applying AC power. Maximum recorded time is 10,000 hours. The hour
meter stops at maximum (10,000 hrs) and can only be reset by Aqua-Air Manufacturing.
The hour meter functions are described fully on page 16 of this manual.
MODES OF OPERATION
Off Mode
When the Tempwise 2001 is in the Off mode, all control outputs are turned off.
Program parameters and user settings are saved in nonvolatile memory. The program
mode can only be accessed from the Off mode.
On Mode
When the control is in the On mode, power will be supplied to the appropriate control
outputs and the display will indicate the current state of operation. The operating and
program parameters resume based on those stored the last time the unit was operating.
Cool Only Mode
When “Cool” LED is on, only the cooling systems are selected and operated as
required. When the temperature drops below the set point, the system will not
automatically switch to the heating mode. Cooling only is available for customers that
do not want automatic cooling and heating operation. Systems without reverse cycle
heating can have an optional electric heater installed should heating be required.