Honeywell thm5421c User Manual

VisionPRO® IAQ Equipment Interface Module
69-1823EFS—05 2
Installation
1 Remove cover from Equipment Interface Module (EIM).
2 EIM can be mounted on equipment or on wall. Use included wall anchors for mounting onto
drywall (drill 3/16" holes for drywall; 7/32" holes for plaster).
Wiring
Connect wires as shown below (see wiring guides on following pages).
CAUTION: This product may be damaged if mounted inside HVAC equipment. Install
only on the outside of HVAC equipment.
LED
Restore power and check LED:
• LEDblinksrapidly:Normalinformation
transfer.
• LEDblinksonce:IncomingmessagetoEIM.
• LEDblinkscontinuously:Wiringproblem.
Check wiring to terminals 1, 2, 3.
• LEDalwaysoff:Wiringproblem.Check
wiring to terminals 1, 2, 3.
• LEDalwayson:EIMmayneedreplacement.
NOTE: It is normal for the LED to blink
continuously during startup, and while
checking equipment status (Auto
Discover mode).

Honeywell thm5421c Specifications

General

Brand	Honeywell
Model	thm5421c
Category	Thermostat
Language	English