Richmar HydraTherm - Page 14

TROUBLESHOOTING
OPERATION: HEATING MODE (CONTINUED)
PROBLEM POSSIBLE CAUSE POSSIBLE SOLUTION
Device begins heating
but never reaches
desired temperature
and/or set point. Both
the Power Indication
Lamp and Digital
Thermostat Controller
display are illuminated.*
Verify SETPOINT setting/
value
Set to desired temperature (see
manual)
Digital Thermostat
Controller
Replace Digital Thermostat
Control
Power Contactor
intermittent
Replace Heating Element Power
Contactor/Relay
HIGH LIMIT Switch
intermittent
Replace HIGH LIMIT Switch
Assembly
Device heating above
or below set point
temperature. Both the
Power Indication Lamp
and Digital Thermostat
Controller display are
illuminated.*
HEATING ELEMENT
intermittent
Replace Heating Element
Digital Thermostat
Controller faulty
Replace Digital Thermostat
Control
Faulty Power Contactor Replace Heating Element Power
Contactor/Relay
Faulty High Limit Switch/
Assembly
Replace High Limit Switch/
Assembly
Controller displays:
“---“ or “ooo”. Both the
Power Indication Lamp
and Digital Thermostat
Controller display are
illuminated.
Thermistor wire(s)
disconnected at Controller
terminal (purple wires)
Re-connect thermistor wire(s) in
terminal position 1 and/or 2
Faulty High Limit Switch
Assembly
Replace HIGH LIMIT Switch
Assembly
Faulty Digital Controller Replace Digital Thermostat
Control
If none of the possible repair solutions listed above solve the issue:
TURN OFF UNIT
UNPLUG DEVICE
LET WATER COOL DOWN
REMOVE PACKS
DRAIN UNIT
ISOLATE UNIT
CONTACT RICHMAR SERVICE DEPARTMENT
*NOTE: Temperature readings from external thermometers may dier from the Controller’s
displayed temperature based on location of temperature reading, and type of thermometer
used.
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