Troubleshooting; Problem/Cause/Solution - Bosch HydroPower TF250-8G(10H) Installation Manual And Operating Instructions

16 | Troubleshooting

8 Troubleshooting
8.1

Problem/cause/solution

Assembly, maintenance, and repairs must be performed by qualified technicians only. The following chart offers possible solutions
to problems.
In most instances it is advisable to have a technician attend and inspect the appliance.
Some further trouble shooting advice may be found at http://www.bosch-climate.com.au
Problem
Fluctuation in hot water temperature.
Unit not working. (No Hot Water).
Unit not working after change in Gas
Supply (Maintenance work on Mains or
change of LPG cylinders).
Not hot enough.
Smell of gas.
Temperature too hot in Summer.
Temperature too cold in Winter.
Table 10
8 716 473 071 (2015/04)
Cause
Insufficient flow through the hot water
unit.
Tapware does not give sufficient flow
(section 2.5, Low Flow Rates).
Locked out due to failure to ignite.
The ignition will lock out after 20 seconds
if a flame is not established.
Air in gas lines.
Insufficient Natural Gas supply.
Consumer gas and water controls.
Gas Cylinders may be empty / undersized
(45kg cylinders recommended for LPG).
Gas leak.
Incoming water temperature has
increased with the ambient temperature
and Gas control is on hot position (Fully
right).
Incoming water temperature has
decreased with the ambient
temperature.Gas control is on warm
position (Fully Left).
Solution
Increase water flow by opening multiple
hot taps.
If fluctuation ceases then check for
blockages, aerators dirty etc.
Change tapware to meet requirements.
Turn off all hot water taps and retry.
If unit still does not work - isolate valves at
unit for 20 seconds. Open valves and
retry.
If unit still fails to ignite refer to qualified
technician.
Turn on hot water tap inside house.
Isolate water valve at unit for 20 seconds.
Open valve and check if unit lights.
Repeat this operation 3-4 times, if unit
still fails to ignite call your Gas Retailer or
a qualified technician.
Requires a service technician to inspect
and test gas supply pressures /
recommission.
Adjust gas and water controls.
Isolate Gas supply to hot water unit/
premises.
Call your Gas Retailer or a qualified
technician.
Adjust Water and Gas controls at the unit
to achieve desired temperature.
Adjust Water and Gas controls at the unit
to achieve desired temperature.
HydroPower