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INTRODUCTION
Servicing should only be performed by a Qualified Service Agent
2
INTRODUCTION
This Service Manual is designed to be an aid in servicing and troubleshooting the
commercial electric water heater models listed on the cover.The instructions, illustrations
and procedures contained in this manual are used to verify proper operation and to
diagnose and repair common service problems.
This Service Manual does not replace or supersede the Instruction Manual that came with
the water heater. Always refer to the Instruction Manual that came with the water heater for
complete installation instructions. If the Instruction Manual is not available copies can be
obtained from the manufacturers web site or by calling the toll free phone number shown on
the back cover of this Service Manual.
Review the Common Service Problems on page 64 prior to performing any service
procedures.
QUALIFICATIONS - QUALIFIED SERVICE AGENT
Servicing the products referenced in this manual requires ability equivalent to that of a
Qualified Agency (as defined by ANSI below) in the field involved. Installation skills such as
plumbing, electrical supply are required in addition to diagnostic and electrical testing skills
when performing service.
ANSI Z223.1 2006 Sec. 3.3.83: “Qualified Agency” - “Any individual, firm, corporation or
company that either in person or through a representative is engaged in and is responsible
for (a) the installation, testing or replacement of gas piping or (b) the connection, installation,
testing, repair or servicing of appliances and equipment; that is experienced in such work;
that is familiar with all precautions required; and that has complied with all the requirements
of the authority having jurisdiction.”
SERVICE WARNING
If you are not qualified (as defined by ANSI above) and licensed or certified as required by
the authority having jurisdiction to perform a given task do not attempt to perform any of the
service, diagnostic or troubleshooting procedures described in this manual. If you do not
understand the instructions given in this manual or do not feel confident in your abilities to
perform a given task do not attempt to perform any procedures outlined in this manual. Call
the toll free phone number listed on the back cover of this manual for technical assistance.
IMPORTANT SERVICE REMINDER
When performing any troubleshooting step outlined in this manual always consider the
wiring and connectors between components. Perform a close visual inspection of all wiring
and connectors to and from a given component before replacement. Ensure wires were
stripped before being crimped in a wire connector. Ensure wires are crimped tightly in their
connectors. Ensure connection pins in sockets and plugs are not damaged or worn. Also
ensure plugs and sockets are mating properly and providing good contact.
Failure to perform this critical step or failing to perform this step thoroughly often results in
needless down time, unnecessary parts replacement, and customer dissatisfaction.