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Lochinvar
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Water Heater
Lochinvar
151 - 801 service manual
Models:
151 - 801
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Troubleshooting
Install
Maintenance
Check ignition ground wiring
Address reported problems
Navigation Dial Press Or Turn Reset Key
Combustion Analysis Procedure
Fault
Service Mode Delay
Check flame signal
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Notes
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Contents
Models
AWII-SERRev A
Save this manual for future reference
Hazard definitions
DANGER
Contents
Water heater operation
When servicing water heater
Please read before proceeding
Handling ceramic fiber materials
Troubleshooting
What is in this manual?
Service
Maintenance
RIGHT SELECT KEY
1Service
The Armor water heater display
NAVIGATION DIAL PRESS OR TURN RESET KEY
BOARD
Control inputs
LOW VOLTAGE
CONNECTION
SMART SYSTEM CONTROL BOARD
Control outputs
LOW VOLTAGE CONNECTION BOARD
1Service continued
How the water heater operates
Access modes
Installer
General Operation
1Service continued
OPERATION
DISPLAY
Table 1A Sequence of operation
OPERATION
Display panel menu access
BUTTON
SCREEN
OPERATION
Display panel parameter access
BUTTON
SCREEN
Menu
User Access
Installer Access
Parameter table
Menu
User Access
Installer Access
Parameter table
A General
Temperature units C / F
Display Timeout
Viewable and changeable control parameters
B Data Logging
D DHW Settings
Reset last 10 errors
Service Mode Delay
BMS Active / Inactive
ModBus T/O Timeout
F Control modes
BMS Thermostat Input Active / Inactive
Minimum On/Off Time
DHW Pump Delay
DHW Pump Anti-SeizeDelay
BMS Type Power / Set Point
Service Notification Cycles
I Service Notification
Service Notification in Months
Service Notification Running Time
Table 2A Service and Maintenance Schedules
2Maintenance Maintenance and annual startup
Service technician
Owner maintenance
Inspect water heater area
2Maintenance
Address reported problems
Clean condensate trap
Check expansion tank
2Maintenance continued
Flue vent system and air piping
Check water system
Figure 2-2 Burner Assembly
Check ignition ground wiring
Check all water heater wiring
Check control settings
Review with owner
Check flame signal
Cleaning heat exchanger
Table 2B Heat Exchanger Cleaning Kits
Check the following
3Troubleshooting
Before troubleshooting
Check control module fuses
CAUSE
3Troubleshooting continued
FAULT
Table 3A Troubleshooting Chart - No Display
Wire Color - G and Y
Checking temperature sensors
Temperature F
Wire Color - R/BK and Y
Relief Valve
Table 3E Troubleshooting Chart - Noisy System
Noisy
No Pump
FAULT
Flow Switch
DESCRIPTION
3Troubleshooting
FAULT
Anti-cycling
Flame Fail Ign
3Troubleshooting continued
FAULT
No Flame
Running
3Troubleshooting
High Limit
Auto Reset
Manual Reset
Flame Sequence
Fail
Fan Low
Fan Speed Low
GV/Relay
Delta T High
Sensor Shorted
Louver Proving
Flue Temp High
3Troubleshooting
Service Blk
Outlet Temp High
Rem Ctrl Flt
Low 24 VAC
Watch Dog Error
No Error Stored
Fatal Error
Table 3G Flue Products
Combustion Analysis Procedure
Gas Valve Adjustment
POSSIBLE CAUSE
Models
Gas valve adjustment procedure
Figure 3-2 Gas Valve Adjustment Models
Figure 3-3 Gas Valve Adjustment Model
3Troubleshooting
Figure 3-4 Gas Valve Adjustment Model
Figure 3-5 Gas Valve Adjustment Models
Models
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AWII-SERRev A 8/10
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