PATH freewatt HDJ, Инструкция по установке, эксплуатации и обслуживанию, Страница: 49 / 68

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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.