Troubleshooting Guide - Atmor 900 series Installation Manual

TROUBLESHOOTING GUIDE

Your water heater has no internal user serviceable parts and should be returned to the factory for repair or
replacement. Please contact toll - free hot line for return authorization.
If after following the Installation Instructions, your Instant heater does not heat water in accordance with this
literature, please check the following:
Symptom
No hot water despite
fully open hot water
faucet
The activation flow rate
Needed to turn on the
heating
Element has not been
reached
No running water from
the unit
• Problems? - Call our toll-free hotline (888) 783-6082 Ext. 311.
Possible Cause
No electrical power.
Low Voltage / Low
Power
Length of Pipe
Flow Rate
Low flow rate
Freezing
Solutions
Check the circuit breaker and
Voltage at the wiring block.
Verify your voltage by using a voltage meter. You
should obtain your reading off the
two outside terminals located on the heater.
Compare the reading against the voltage specified
in the Installation Instructions.
The center terminal is always the earth ground.
Length of pipe run will affect the temperature
increase. The heater should be mounted
No more that 12-18 inches from the point of use.
Controlling flow rate is essential to insure proper
temperature increase.
Check your flow rate to insure proper operation of
the heater.
In the case of the low flow rate heater, it is
mandatory that the flow control be attached to the
end of the faucet.
Clean filter screen
- turn circuit breaker off
- open hot Valve to release
Pressure from the unit.
- Check shut-off valve and make
sure valve is open 100% to allow
full water pressure to the heater
- turn circuit breakers on.
Standard Flow Rate Models require 0.5GPM to
activate.
Instant heaters must be drained and stored if
installed in a location subject to freezing.
Disconnect the inlet/outlet compression fittings and
blow air through one side of the heater to assist
draining.
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