Element
Operation and Maintenance
L-OMM-0003_A
• 10/8/2021 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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MAINTENANCE
Regular service and routine maintenance must be performed by a qualified service agency or
maintenance provider to ensure safe, reliable and efficient operation. To ensure proper
maintenance, the following instructions should be posted near the appliance and maintained in
legible condition. Verify proper operation after servicing.
16.1 Lync Q Water Heater Communications and Diagnostics
16.1.1 Indicators
The PIM has three LED indicators to display operational status and to help diagnose system
error conditions:
•
Green LED
– Power:
Indicates the PIM module is receiving 24 VAC power.
•
Amber LED
– Alarm/Test:
Indicates the PIM is in Commission Test Mode or that a
diagnostic alarm (fault) is present.
•
Red LED
– Diagnostic Code:
Normally off. During a control or system fault condition, this
LED flashes the error codes.
16.1.2 Alarm Messages
– Diagnostic Codes (Flashes)
MESSAGE
DESCRIPTION
LED Flashes
MODBUS CODE
ID CARD
The ID card is connected to the PIM control board when
the system is initialized for the first time, the ID card selects
the control profile to be used. An ID card error may occur
when the original card is replaced with an incorrect card or
has been disconnected from the PIM control board.
Red LED ON,
Green LED OFF
20
INTERNAL
FAIL
The PIM control board may have failed. Replace the
control board if manually resetting the control does not
correct the fault.
Red LED ON
21
CTL SETUP
FAIL
Reset defaults in the TOOL BOX menu. If unable to
correct, replace the control display.
N/A
1
VENT LIM
Vent temperature sensor is approaching the programmed
limit, forcing burner to operate at reduced firing rate.
N/A
5
AIR FLOW
FAIL
Blower is not reaching the minimum speed for purge and
burner operation. This may be caused by a faulty blower.
1
9
FLAME FLSE
Usually caused by a leaky gas valve which propagates a
flame after the call for heat cycle has ended. Check for
leakage through the gas valve, or replace flame control.
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19
FLAME FAIL
Burner failed to light, or no flame signal detected. If the
burner fails to light it is likely that the hot surface igniter
(HSI) is faulty or the burner fuel/air mixture is out of
adjustment. If the burner lights but immediately goes out,
check for inadequate gas supply, faulty gas valve/regulator
or poorly adjusted combustion.
3
15
FLAME LOSS
Flame loss can be caused by a faulty igniter, damaged
refractory or combustion that becomes poorly adjusted as
the burner modulates to higher inputs.
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