Name: AAON ASM01670
Brand: AAON
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MHGRVX-B2 Technical Guide

G112890 · Rev. A · 220805

2425 South Yukon Ave • Tulsa, OK • 74107-2728

Ph: (918) 583-2266 • Fax: (918) 583-6094

AAON P/N: G112890, Rev. A

AAON Controls Support:

866-918-1100

Monday through Friday, 7:00 AM to 5:00 PM Central Time

Controls Support website:

www.aaon.com/aaon-controls-technical-support

AAON Factory Technical Support:

918-382-6450 | techsupport@aaon.com

NOTE: Before calling Technical Support, please have the

model and serial number of the unit available.

PARTS: For replacement parts, please contact your local

AAON Representative.

Table of Contents3
Overview5
MHGRVX-B2 General Information5
Figure 1: MHGRVX-B2 Dimensions5
Wiring6
Installation and Wiring6
Table 1: MHGRVX-B2 Electrical and Environmental Requirements6
MHGRVX-B2 to AAON Unit Controller Wiring7
Figure 2: MHGRVX-B2 to AAON Unit Controller Wiring7
MHGRVX-B2 Stand-Alone Wiring8
Figure 3: MHGRVX-B2 Stand-Alone Wiring8
Inputs and Outputs9
Inputs9
Table 2: MHGRVX-B2 Inputs and Outputs9
Outputs10
Operation Modes11
Modes of Operation11
Additional Features13
Lcd Screens14
Navigation Keys14
Figure 4: LCD Display and Navigation Keys14
Table 3: Navigation Key Functions14
Main Screens Map and Main MHG REHEAT Screens15
Status and Alarm Screens16
Setpoint and Force Valves Screens17
Protected Screens18
Troubleshooting21
LED Diagnostics21
Table 4: STATUS LED Blink Codes21
Table 5: ALARM LED Blink Codes21
Alarms22
Figure 5: MHGRVX-B2 LED Locations and Descriptions22
Other Checks23
Table 6: 0-3V Temperature Sensor - Voltage and Resistance for Type III Sensors23
Table 7: 0-5V Temperature Sensor - Voltage and Resistance for Type III Sensors24
Appendix A: Sat Sensor25
Supply Air Temperature Sensor Installation25
Figure 6: Supply Air Temperature Sensor Installation25
SAT Sensor Wiring Guide and Jumper Settings26
Table 8: SAT Wiring Conditions26
Appendix B: Compatibility27
MHGRVX Series Drop-In Replacement27
Appendix C: Reheat Expansion Module28
Features and Dimensions28
Figure 7: Reheat Expansion Module Dimensions28
Installation and Wiring29
Wiring30
Figure 8: Reheat Expansion Module(S) Wiring30
Operation Modes31
Table 9: Reheat Expansion Module ALARM LED Blink Codes31
LED Diagnostics and Troubleshooting32
Figure 9: Reheat Expansion LED Locations and Descriptions32
Appendix D: Frequently Asked Questions33
Troubleshooting33

AAON ASM01670 User Manual

Table of Contents

Questions and Answers:

AAON ASM01670 Specifications

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Brand	AAON
Model	ASM01670
Category	Controller
Language	English