Econergy Installation Manual Rev G 240914
© Hot Water Heat Pumps Ltd 2018
12/03/2018
www.econergy.co.nz
22
Heat Pump Water Heater Installation Guide
Symptom
Possible Cause
Things to Check
No hot water,
status indicator
has lights off
a) No power to hot
water cylinder
Check all switches are on, there is
power to house and circuit breaker
marked “hot water” is ON
b) Ripple control
activated
Either a) temporarily bridge out relay in
board OR b) run temporary feed to heat
pump to allow commissioning to occur.
Water
temperature
too low
a) temperature valve
set incorrectly or
malfunctioning
Remove cap from top of tempering
valve and screw in to increase water
temperature.
b) partial loss of
refrigerant or other
sealed system
malfunction
Call 0800 32 66 37 for service support.
Unit stops
running less
than 30 secs of
operation
a) Indicates fault
with thermistors or
thermisor inputs on
PCB or damaged
CAT-5 cable.
Remove HWB panel and cover on main
electrical box. Check that all sensors
are plugged into their correct locations
and the CAT-5 cable is securely
plugged in and undamaged. If unit still
stops use Config Software to determine
which thermistor is out of spec and
rectify accordingly.
Unit stops
Running after
10-15 mins
operation
a) Likely indicates
unit has cut out on
high condenser
temp event
Check that ball valves are open. Close
isolation valve going from water heater
unit into top of HWC. Slacken fitting on
outlet of water heater and purge for a
minute or so. Close fitting, open valve
and restart unit. If this fails, use Config
Software to determine what is causing
the unit to stop. Call 0800 32 66 37 for
service support.
Unit faults
after heating
entire tank
a) Likely tank
sensor mounting
issue
Ensure tank sensor is securely
mounted in place. Rectify if required
and retest.
Water is
dripping from
rear of unit
(behind finned
evaporator)
a) This is normal as
the unit will remove
moisture in the air
above 70% RH
No action required.