Troubleshooting; Basic Problems - Vesta VH-150 User Manual

Troubleshooting

Basic Problems

If there is a problem with the water heater, refer to the following table for possible remedies. For minor problems, turning the water heater off
and then turning back on may resolve the situation. If turning the water heater off and on and attempting the remedies suggested below do not
resolve the problem, contact an authorized technician, licensed professional, or technical support at 1-800-761-0053.
Category Problem
Water heater does not ignite
when water is running.
Initial
operation
Unit attempts to ignite but
fails
Hot water is not produced
when a faucet is opened.
No water is available when a
faucet is opened.
The hot water is not at the
correct temperature.
Water takes a long time to
become hot after opening
the hot water faucet.
Temperature
The water is too hot.
The water is not hot enough.
Fluctuation in hot water
temperature.
10
Installation Manual
Possible Cause(s)
• Are the gas and water pipes connected
properly?
• Is there air in the gas line?
• Is the gas supply pressure sufficient?
• Are the gas and water supply valves fully
open?
• Is the water supply cut off to the household?
• Is gas being provided by the gas meter?
• Is there enough gas (for LP) in the tank?
• Is the water inlet filter clogged?
• Is the power button turned on?
• Is the water supply cut off?
• Is the water heater frozen?
• Are the pipes frozen?
• Is the hot water faucet sufficiently open?
• Have you allowed enough time for the cold
water in the pipes to drain out?
• Are the gas and cold water supply valves fully
open?
• Is the water temperature setting appropriate?
• Are the gas and cold water supply valves fully
open?
• Is the water temperature setting correct?
• Is the water inlet filter clogged?
What to Do
• Check for correct plumbing or crossed piping to
the unit.
• Check the water inlet filter for debris.
• Turn off the water heater and then turn it back on.
• Have your installing contractor check the gas
supply pressure.
• Ensure the water heater is powered by 120 V-1
PH-60 Hz.
• Fully open the gas and water supply valves.
• Check the water inlet filter for debris.
• Check the power status of the water heater.
• Open the cold water supply.
• Check if the water heater and/or the pipes are
frozen.
• Fully open the hot water faucet.
• Even though the unit may be operating properly,
the cold water contained in the piping will need to
flow through the faucet before the hot water can
reach the faucet. Wait for several minutes.
• If the cold water supply temperature is too high, it
is possible for the temperature to be higher than
the temperature set on the front panel. Decrease
the water temperature on the front panel.
• If only a small amount of hot water is required, it is
possible for the temperature to be higher than the
temperature set on the front panel. Decrease the
water temperature on the front panel.
• If the cold water supply passes through a solar pre-
heating system, it passes for the delivered water
temperature to be higher than the temperature set
on the front panel.
• Fully open the gas and cold water supply valves.
• Check the water temperature setting.
• Clean the water inlet filter for debris.