APC UTS6H Specifications download pdf (Page 49)

16 - TROUBLESHOOTING

16.4 General Troubleshooting

If And Check or repair

No Control module

or HI Module

operation

120 VAC electrical connec-

tions

Blown fuse on

freewatt

control module circuit board

No boiler operation

Thermostat settings

Check Boiler per

freewatt

PLUS

Boiler Control Manual

and Troubleshooting Guide

Honda MCHP

overheats

Coolant Pump •

functioning Properly

Circulators Functioning •

Properly

Air in Coolant Line•

Coolant Line Blocked•

Coolant lines piped •

correctly into Honda

MCHP

Mixing valve setting•

No power to

thermostat

Display

is blank

Check Control Module

Connection

Fuse in thermostat 24VAC

Fuse in

freewatt

control

module

or Faulty wire connection

No Honda MCHP

operation

See MCHP Manual

Hydronic

freewatt PLUS

System consists of eight major

components:

Boiler, •

freewatt

• Control Module,

Hydronic •

freewatt PLUS

Hybrid Integration (HI)

Module,

Honda MCHP, •

freewatt

• HAI Thermostat,

freewatt

• Transfer Switch,

Load Balancing Transformer and •

APC Universal Transfer Switch •

Each major component has its own installation and service

manual outlining troubleshooting information regarding

individual component.

Make corrective action. Turn off power and restart system

to clear error conditions.

Use BYPASS MODE, (CHP MODE OFF) to sustain heating

operation while resolving

freewatt

control module or

MCHP unit errors or malfunctions.

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APC UTS6H Specifications Page 49

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