Troubleshooting; Routine Maintenance; Replacement Parts - Electro Industries EM-MB00 Installation & Operating Manual

Packaged make-up air

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Table Of Contents

Table of Contents

1. This product contains several interference suppression components, but as an electronic logic

product unpredictable and unusual transients or interferences may sometimes cause strange

results. If this product is acting strange, turn off the source power, count to 10, and reenergize.

2. Terminal blocks are clamp-down type. If there is no wire connected and the screw is loose, the

screw may not necessarily make a good electrical contact to the inside components. Example – if

you are jumpering the thermostat terminals without thermostat wire connection or if you are

attempting to measure voltage on a screw head, you may get erroneous or unpredictable results if

the screw is not tightened down.

Outlet Temperature Sensor

See previous page relating to LED indication and bad sensor operation.

The green LED is an indication that the micro program cannot read a temperature value. This sensor test

or indication does not determine a bad temperature reading, it simply indicates there is software

communication to the sensor itself.

Temperature Sensor Detail

Red wire to J2-1 +5VDC or RED

Black wire to J2-2 DATA or BLK

White wire to J2-3 COM or WHT

Air Filter

A dirty filter can lead to poor system performance and eventual hi-limiting. It is suggested to wash filter

at least twice per year. See Routine Maintenance for instruction on how to wash the filter.

Control Fuse

The low voltage source fuse is a 2A fast blow. A spare fuse is included (next to the operating fuse).

Filter – this unit includes an air filter which is a permanent and washable filter.

Suggest at least twice per year removing filter and using standard household water to back flush collected

dust/debris.



Remove screws from small door, opposite the hinged door end



Filter is simply held within channels

Part Number

4341

5541

WFCD25605

UFUSE0440

VLUG5527

07/30/2019