Part 12 - Troubleshooting - Westinghouse WGRT 150 Series Installation Start-Up Maintenance Parts

PART 12 – TROUBLESHOOTING
PROBLEM
1. Is the plug on the power supply cord unplugged
from the electrical outlet?
No electrical power
2. Is electrical panel's 10 Amp circuit breaker tripped?
to the water heater
3. Is the fuse on the circuit board good?
4. Is there a power outage to the home?
1. Is the water supply valve shut off at the meter (do
cold water faucets work)?
No water available
2. Is the water supply valve near the unit open?
when a faucet is
3. Is the water pipe frozen?
opened
4. Is an error code flashing on the display panel (leak
detected)?
1. Does the water heater have power (plugged in)?
Hot water is not 2. Is the water heater turned ON?
available when the 3. Is an error code flashing on the display panel?
faucet is opened. 4. Is the gas supply valve open or shut off at the meter
(do other gas devices work)?
The water 1. Is the faucet open enough to draw at least 0.6
temperature is not gallons (2.3L) per minute through the water heater?
hot enough or turns 2. Is an error code flashing on the display panel?
cold during use. 3. Is the outlet water temperature set too low?
It takes a long time
before hot water
Is the faucet some distance from the water heater?
flows from the
faucet.
The water is not hot
Is the water temperature set too low?
enough.
The water at the
Is the water temperature set too high?
faucet is too hot.
A fan can be heard 1. The fan continues to operate after the burner shuts
even when the unit is off to clear the exhaust vent of combustion gases.
not operating. 2. The fan may run to help prevent freezing.
White "smoke" can
be seen coming out Depending on the outside temperature, water vapor
of the exterior can be produced as the exhaust is vented.
exhaust gas vent.
Table 35 – Troubleshooting Chart
DIAGNOSTICS AND SUGGESTED CORRECTIVE ACTIONS
The water heater control is able to record information about the water heater's condition at the time of the ten previous faults or errors.
This information is available to view in the Installer Mode under the History screen.
The following screens may be displayed when reviewing the water heater history. The table below also includes diagnostic information
and possible corrective actions.
Display
Nothing appears on
the display control Control is not
panel but the fan receiving power
runs at full speed
TROUBLESHOOTING CHART
POSSIBLE CAUSES
Condition
Check wiring for short circuit or incorrect
Check transformer connection to the control
per wiring diagram. Check for 14V output of
1. Reset the plug.
2. Reset the circuit breaker.
3. If the display panel is blank, unplug the unit or
contact an authorized service technician.
4. Contact the power company.
1. Open the closed supply valve.
2. Open the water supply valve.
3. Turn OFF the unit, close all water valves and the
gas valve. Contact an authorized service technician.
4. Refer to error code information and contact an
authorized service technician.
1. Restore electrical power to the unit.
2. Press and hold the Power button to turn the unit
ON.
3. Refer to the Diagnostic and Error Codes section in
this manual.
4. Open the gas supply valve.
1. Open the faucet to allow more water flow.
2. Refer to the Diagnostic and Error Codes section in
this manual.
3. Adjust the outlet water temperature (refer to the
procedure in this manual).
a. Allow time for the cold water already in the pipes to
flow from the faucet.
b. Have recirculation valves and/or plumbing return
line(s) installed and program the unit for recirculation
mode.
Adjust the temperature setting.
Adjust the temperature setting.
1. This is normal operation – no action is required.
2. Protect the water heater from freezing
temperatures or shut off and drain the unit.
This is normal operation – no action is required.
Diagnostic
wiring
panel wire
POSSIBLE REMEDIES
Possible Corrective Actions
Correct wiring per wiring diagram including
connection of transformer to the control
Push the Power button on the control panel
WHL-004 REV. 5.26.17
65