Service & Troubleshooting Guide - Home Generator System - Models 040213 and 040234 (15kW)
Section 1 - General Information
Page 19
1
Access To The CMA Board
The CMA is mounted behind the control panel door
behind the face of the control panel
(Fig. 7).
1. Open and/or remove control panel door.
Fig. 7 - Location Of The Control Panel
2. Make sure the SYSTEM switch is set to
OFF
.
3. Remove the 15 AMP fuse.
4. Remove the circuit breaker cover.
5. Disconnect the 2-pin and 10-pin connectors.
6. Remove the four mounting screws
that hold
the face of the control panel (Fig. 8).
Fig. 8 - Control Panel Mounting Hardware
CMA Connections
The CMA is connected to its various circuits through
three connectors that are mounted directly to the circuit
board. One connector has 8 pins
, another has two
pins
and the other has 10 pins
(Fig. 9). All
receptacles have matching halves. The 2-pin plug
supplies 240VAC from UTILITY power. The 10-pin plug
is used for optional generator features. In addition, the
CMA also has connections for E1 and E2
which
sense 240VAC on the generator and four terminals
which can be used for optional battery and engine
warmers.
Fig. 9 - CMA Connector Receptacles And Pins
The 8-Pin Connector
The 8-pin connector is wired to the internal systems of
the unit and is the primary point of measurement for
troubleshooting the Home Standby System. When
directed to measure an electrical value, the location of a
meter probe is shown with an arrow in the picture and
the corresponding pin of the connector is
bold in a graphic illustration. The pin numbering of the
connector is shown with the CMA board exposed
(upsidedown in relation to the schematic) as in (Fig.10).
Fig. 10 - Measuring Electrical Values & Components
115-0005
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Summary of Contents for 40213
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