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21 INSPECTION, MAINTENANCE AND SERVICE.
General
For a good, safe and long-time operation of the water heater and to maintain warranty it is mandatory to carry
out inspection, maintenance and service on the water heater at least once a year.
Inspection, maintenance and service of the water heater should also be carried out on the next occasion
•
When a number of similar error codes and/or lock-outs appear.
•
At least every twelve months and/or after 2000 burning hours maximum, whichever comes first, mainte-
nance must be done to ensure safe and efficient operation.
Damage caused by the lack of maintenance will not be covered under warranty
Service intervals
The normal service frequency for the water heater is once a year and/or after 2000 burning hours maximum,
whichever comes first. Every service interval the water heater should be cleaned and checked, according to the
maintenance procedures. If there is doubt whether the water heater is operating with the correct water and/or
combustion air quality, it is advised that a first check is already executed after six months. This check serves to
determine the frequency of the future services. The maximum interval between two services is one year and/or
after 2000 burning hours maximum, whichever comes first.
Inspection, Maintenance and Service must be completed for a safe and efficient operation of the water
heater. "Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause im-
proper and dangerous operation.
"Verify proper operation after operation servicing."
Inspection, maintenance and service.
Inspection, maintenance and service including the replacement of water heater parts must only be carried out by
a licensed professional, service agency or the gas supplier. Apart from the maintenance proceedings it is required
to maintain a service log for each water heater that includes all of the following information:
• Serial number
• Date and time of maintenance
• Name of maintenance engineer
• Which parts were exchanged during maintenance
• Which settings (software) were changed during
maintenance
• Special remarks / findings
• Future aspects that need extra attention
During maintenance, the following items in bold listed below of the water heater must be checked and inspected.
NOTICE: Before starting to work on the water heater:
•
Switch off the electrical power to the water heater (service switch and/or unplug water heater)
•
Close the gas valve to block gas supply to the water heater
Customer comments
Comments and remarks from the customer should be analyzed and used to find possible causes for any occurring
problems and complaints.
Service history
The operational and fault history (total amount and since the last service) can be viewed in the water heater con-
trol. This information can be used to specify the maintenance and service proceedings in relation to the water
heater (parts).
Water heater History
Successful Ignitions
Failed Ignitions
Flame Failures
Operation Days
32
10
0
0 days ▼
E93.1804.014
• Additional aspects: measurement reports, com-
plaints by the (end)-user, lock-out codes, etc.
• Static Gas Pressure inches W.C.
• O
/ CO
% at high and low fire
2
2
• Gas Pressure at high fire
• Gas Pressure at low fire
• pH of the water in the system
• name of service company
• date of service
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