York ZR240 Specifications Page 61
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Subject to change without notice. Printed in U.S.A. 275864-YIM-C-0910
Copyright © 2010 by Johnson Controls, Inc. All rights reserved. Supersedes: 275864-YIM-B-1008
Johnson Controls Unitary Products
5005 York Drive
Norman, OK 73069
Unit Control Board Option Setup
Option Byte Setup
• Enter the Option Setup mode by pushing the OPTION
SETUP / STORE button, and holding it for at least 2
seconds.
• The green status LED (Option Byte) will be turned on and
the red status LED (Heat Delay) is turned off.
• The 8, 4, 2 and 1 LEDs will then show the status of the 4
labeled options ((8) Fan Off at Heat Start, (4) Low
Ambient Lockout, (2) Free Cooling Lockout, and (1)
Lead / Lag).
• Press the UP or Down button to change the LED status to
correspond to the desired Option Setup.
• To save the current displayed value, push the OPTION
SETUP / STORE button and hold it for at least 2 seconds.
When the value is saved, the green LED will flash a few
times and then normal display will resume.
NOTE: While in either Setup mode, if no buttons are pushed for
60 seconds, the display will revert to its normal display,
exiting the Option Setup mode. When saving, the
control board only saves the parameters for the
currently displayed mode (Option Byte or Heat
Delay).
Heat Delay Setup
• Enter the Option Setup mode by pushing the OPTION
SETUP / STORE button, and holding it for at least 2
seconds.
• The green status LED (Option Byte) will be turned on and
the red status LED (Heat Delay) is turned off.
• Press the COMM SETUP / SELECT button to toggle into
the Heat Delay Setup, the green LED will turn off and the
red LED for Heat Delay will turn on.
• The 8, 4, 2 and 1 LEDs will then show the status of the
Heat Delay, (See Table 27). Press the UP or Down button
to change the LED status to correspond to the desired
Heat Delay Value.
• To save the current displayed value, push the OPTION
SETUP / STORE button and hold it for at least 2 seconds.
When the value is saved, the red LED will flash a few
times and then normal display will resume.
NOTE: While in either Setup mode, if no buttons are pushed for
60 seconds, the display will revert to its normal display,
exiting the Option Setup mode. When saving, the
control board only saves the parameters for the
currently displayed mode (Option Byte or Heat
Delay).
Optional VAV Control Board Flash Codes
Flash codes are also utilized by the VAV add-on board to aid in
troubleshooting optional VAV applications. Flash codes are
displayed by a red LED located near the center of the board
using a short on/off cycle (approximately 200-ms on and 200-
ms off).
To verify that the board is functioning correctly, the LED will
display a repetitive 1 second on, 1 second off "heartbeat". Do
not confuse this "heartbeat" with the error flash codes shown in
the table below. To prevent confusion, a 1-flash, flash code is
not used.
Table 27: Heat Delay
Heat
Fan On
Delay
Heat
Fan Off
Delay
Red
LED 8
Red
LED 4
Red
LED 2
Red
LED 1
60 180 On On On On
60 90 On On On Off
60 60 On On Off On
60 30 On On Off Off
45 180 On Off On On
45 90 On Off On Off
45 60 On Off Off On
45 30 On Off Off Off
30 180 Off On On On
30 90 Off On On Off
30 60 Off On Off On
30 30 Off On Off Off
060OffOffOnOn
0 30 Off Off On Off
0 10 Off Off Off On
Non-std Non-std Off Off Off Off
Table 28: VAV Control Board Flash Codes
FLASH CODE DESCRIPTION
On Steady Control Failure
1 Flash Not Applicable
2 Flashes Loss of Communication with UCB
3 Flashes Space Sensor Failure
4 Flashes SAT Sensor Failure
5 Flashes RAT Sensor Failure
6 Flashes OAT Sensor Failure
7 Flashes OH Sensor Failure
8 Flashes RH Sensor Failure
9 Flashes IAQ Sensor Failure
10 Flashes OAQ Sensor Failure
11 Flashes APS Sensor Failure
12 Flashes Limit 2 Switch Open
13 Flashes Purge
14 Flashes VFD Input Failure
15 Flashes Dirty Filter Switch
OFF No Power or Control Failure
- ZR SERIES 1
- Nomenclature 4
- Installation 5
- Location 7
- Rigging And Handling 7
- Rear View 11
- Detail “Y” 11
- Unit with Rain Hoods 11
- Ductwork 12
- Condensate Drain 13
- Compressors 13
- Power And Control Wiring 13
- 18 AWG 150 Feet 15
- Wire Size Maximum Length 15
- THERMOSTAT 16
- 1. Minimum Circuit Ampacity 17
- 3. HACR type per NEC 17
- 275864-YIM-C-0910 22
- Optional Electric Heat 23
- Optional Gas Heat 24
- Options/Accessories 26
- Damper Set Point Adjustment 27
- F, 50 VDC capacitor 29
- Span Length 31
- Air Temperature (ºF) 32
- Correction Factor 32
- Air Flow 33
- 3. kW = BHP x 0.82 35
- Air Balance 38
- Operation 39
- Burner Compartment 49
- Start-Up (Cooling) 50
- Start-Up (Gas Heat) 50
- Checking Gas Heat Input 51
- Charging The Unit 53
- Troubleshooting 54
- Option Byte Setup 61
- Heat Delay Setup 61
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