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Troubleshooting
This section provides useful information for diagnosing and correcting certain problems which may
occur. Before starting the troubleshooting procedure, carry out a thorough visual inspection of the
unit and look for obvious defects such as loose connections or defective wiring.
Before contacting your local dealer, read this chapter carefully. It could save you time and money.
WARNING
Do not move/repair the unit yourself - Before carrying out any maintenance,
service or repair work, the product must be isolated from the mains electrical
supply. To prevent possible injury, only qualified engineers should carry out
these works.
The hints below are for guidance only. If you cannot solve the problem, consult your installer/local
dealer.
The Heat pump will not run.
Please check:
• There is a supply voltage (tripped fuse, power failure).
• The switch on the wired controller is switched on, and whether the correct set point temperature
has been set.
The set temperature level cannot be reached.
Please check whether:
• The permissible operating conditions for the heat pump have been adhered to (air temperatures
too high or too low).
• The air inlet or outlet area is blocked, restricted or very dirty.
• There are closed valves or stop-cocks in the water pipes.
The timer works but the programmed actions are executed at the wrong time (e.g. 1 hour too late or
too early).
Please check whether:
• The clock and the day of the week are set correctly, adjust if necessary.
The fan is starting occasionally, while the filter pump is not running.
Please check whether:
• The timer has been set on the heat pump, with the same hours for when the filtration pump is run-
ning. This will avoid the heat pump checking for flow during off times.
• If the filtration pump driving the heat pump is operating at different times and thus the heat pump
timer cannot be set, swap L5 and L7 on the motherboard. This will connect the flow switch to the
automation input.
If you cannot correct the fault yourself, please contact Pentair for after-sales service.
Maintenance & Troubleshooting
Summary of Contents for ULTRATEMP HXi
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